{"product_id":"halcyon-eclipse-bc-system","title":"Halcyon Eclipse BC System","description":"\u003cdiv class=\"product-rich-description\"\u003e\u003cdiv class=\"product-content\"\u003e\n\u003csection id=\"overview\" class=\"product-section\"\u003e\u003ch2\u003eHalcyon Eclipse BC System\u003c\/h2\u003e\n\u003cp\u003eThe Eclipse BC System is a complete Halcyon single cylinder rig: the Eclipse wing, a backplate, a harness and a single tank adapter, built by Halcyon as one matched system. The Eclipse is the long, narrow single tank wing Halcyon built its reputation on, and this is the most affordable way into a full Halcyon single cylinder setup.\u003c\/p\u003e\n\u003cp\u003eYou choose between three builds. Standard sits on an aluminium plate with a one-piece webbing harness and a stainless steel single tank adapter. Deluxe sits on a stainless steel plate with a padded Cinch quick-adjust harness and a stainless steel single tank adapter. Pro sits on a carbon fibre plate with a Cinch harness and a carbon fibre single tank adapter, and it is the lighter rig to fly with.\u003c\/p\u003e\n\u003cp\u003eWe dive and teach in Halcyon kit in the quarries, at Mercers Lake and on the south coast, so we can tell you how each build behaves with a real cylinder on your back. Halcyon builds every system to order. At the time of writing, Halcyon quotes about a week for a black build to reach us.\u003c\/p\u003e\n\u003cul class=\"product-summary-list\"\u003e\n\u003cli\u003eComplete single cylinder system: wing, backplate, harness and STA\u003c\/li\u003e\n\u003cli\u003eEclipse wing, 30 lb or 40 lb lift\u003c\/li\u003e\n\u003cli\u003eStandard: aluminium plate, webbing harness, stainless steel STA\u003c\/li\u003e\n\u003cli\u003eDeluxe: stainless steel plate, deluxe padding, Cinch harness, stainless steel STA\u003c\/li\u003e\n\u003cli\u003ePro: carbon fibre plate, Cinch harness, carbon fibre STA\u003c\/li\u003e\n\u003cli\u003eAluminium and steel plates in standard, small or long; carbon in standard or small\u003c\/li\u003e\n\u003cli\u003eInflator with 52 cm \/ 22 in LP hose\u003c\/li\u003e\n\u003cli\u003eBlack as standard, custom colours built to order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-info-box\"\u003e\u003cp\u003eBefore you order: this is a single cylinder system. Choose your lift, then your build, then your plate size. Want the newer single wing with built-in trim pockets and dual hose openings? Compare the \u003ca href=\"\/products\/halcyon-era-standard-bc-system\"\u003eEra Standard\u003c\/a\u003e, \u003ca href=\"\/products\/halcyon-era-bc-system\"\u003eEra Deluxe\u003c\/a\u003e and \u003ca href=\"\/products\/halcyon-era-pro-bc-system\"\u003eEra Pro\u003c\/a\u003e systems.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-cta-box\"\u003e\u003cp\u003e\u003cstrong\u003eWant ACB pockets, a weighted STA or a custom colour built in?\u003c\/strong\u003e Halcyon can build the Eclipse with any of these. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e and we'll price it and order it in. For colours, put your build together in \u003ca href=\"https:\/\/halcyon.net\/products?customization=yes\" target=\"_blank\" rel=\"noopener\"\u003eHalcyon's configurator\u003c\/a\u003e and send us a screenshot. Custom colours are built to order, so allow around 8 weeks.\u003c\/p\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection id=\"benefits\" class=\"product-section\"\u003e\u003ch2\u003eWhy divers choose the Eclipse BC System\u003c\/h2\u003e\n\u003ch3\u003eA proven wing with nothing to prove\u003c\/h3\u003e\n\u003cp\u003eThe Eclipse has been Halcyon's single tank wing for years. Its long, narrow shape sits close to the cylinder and keeps lift where it helps your trim. Students who move into an Eclipse rig from a jacket BCD usually find their position settles within a couple of dives.\u003c\/p\u003e\n\u003ch3\u003eParts that are made to work together\u003c\/h3\u003e\n\u003cp\u003eWing, plate, harness and single tank adapter come from Halcyon as one system. There is no guessing whether a third-party plate suits the wing or whether the adapter lines up. We order it, it arrives, and the parts belong together.\u003c\/p\u003e\n\u003ch3\u003eHarness changes without rethreading\u003c\/h3\u003e\n\u003cp\u003eMoving from a 5 mm wetsuit abroad to a drysuit at Mercers Lake usually means rethreading webbing. The Cinch harness on the Deluxe and Pro builds tightens and loosens by hand, so you can gear up loose and snug it down once you're sitting on the cylinder, even with gloves on.\u003c\/p\u003e\n\u003ch3\u003eA rig you won't outgrow\u003c\/h3\u003e\n\u003cp\u003eThis is the same backplate and wing approach used on technical dives. Take it from Open Water through to technical training and the core of the system doesn't need replacing.\u003c\/p\u003e\u003c\/section\u003e\u003csection id=\"features\" class=\"product-section\"\u003e\u003ch2\u003eFeatures that matter underwater\u003c\/h2\u003e\n\u003ch3\u003eEclipse wing\u003c\/h3\u003e\n\u003cp\u003eA long, low-profile single tank wing in 30 lb or 40 lb lift, with an inflator and 52 cm \/ 22 in LP hose as standard. It keeps a clean outline behind you and puts very little bulk around the cylinder.\u003c\/p\u003e\n\u003ch3\u003eStandard: aluminium plate and webbing harness\u003c\/h3\u003e\n\u003cp\u003eThe simplest and lowest-cost Halcyon single cylinder rig: an aluminium backplate, a one-piece webbing harness with crotch strap and a stainless steel single tank adapter. It is lighter to travel with than steel.\u003c\/p\u003e\n\u003ch3\u003eDeluxe: stainless steel plate, padding and Cinch\u003c\/h3\u003e\n\u003cp\u003eA steel plate and steel single tank adapter put weight low and central on your back. For UK drysuit diving, that is ballast you no longer carry on a belt. The deluxe padding helps on long walks to the water with a full cylinder on your back.\u003c\/p\u003e\n\u003ch3\u003ePro: carbon fibre plate and carbon STA\u003c\/h3\u003e\n\u003cp\u003eCarbon is stiff, light and does not corrode. Swap a steel plate and adapter for carbon and you take a noticeable chunk of weight out of your luggage. As a guide, a bare standard stainless steel plate weighs 2.22 kg and a bare standard carbon plate 0.54 kg.\u003c\/p\u003e\n\u003ch3\u003ePlate sizes\u003c\/h3\u003e\n\u003cp\u003eThe aluminium and steel plates come in standard, small or long. The carbon plate comes in standard or small. Small and long cost no more than standard. Most divers fit the standard plate, while small and long plates suit shorter and longer torsos. If you're unsure, ask us before you order.\u003c\/p\u003e\n\u003cdiv class=\"product-notice-box\"\u003e\u003cp\u003eThis is a single cylinder system. Lead is not included. Add the \u003ca href=\"\/products\/halcyon-acb-weight-system\"\u003eACB weight system\u003c\/a\u003e for releasable ballast, or \u003ca href=\"\/products\/halcyon-trim-weight-pockets\"\u003eHalcyon trim weight pockets\u003c\/a\u003e for fine trim.\u003c\/p\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection id=\"who-its-for\" class=\"product-section\"\u003e\u003ch2\u003eWho is the Eclipse BC System for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle cylinder divers moving from a jacket BCD to a backplate and wing\u003c\/li\u003e\n\u003cli\u003eDivers who want a complete Halcyon rig at the lowest system price\u003c\/li\u003e\n\u003cli\u003eDivers who switch between a wetsuit abroad and a drysuit in the UK\u003c\/li\u003e\n\u003cli\u003eAnyone planning technical training who wants a rig they can grow into\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWho it may not be for: if you want built-in trim pockets and dual hose openings, the Era systems are the better match. If you dive twinsets, you want a doubles system. Compare options in our \u003ca href=\"\/collections\/wings\"\u003ewings collection\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003csection id=\"setup-use\" class=\"product-section\"\u003e\u003ch2\u003eHow to get the best from the Eclipse BC System\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChoose lift before you order: 30 lb for most UK and mixed single cylinder diving, 40 lb for heavy steel cylinders or bulky drysuit undersuits.\u003c\/li\u003e\n\u003cli\u003eChoose steel if you want ballast on your back, aluminium or carbon if you travel or dive warm water.\u003c\/li\u003e\n\u003cli\u003eSet the harness in your thickest exposure suit first. On Deluxe and Pro, use the Cinch to take up slack in thinner suits.\u003c\/li\u003e\n\u003cli\u003ePosition the single tank adapter so the valve sits just below the back of your head when you're horizontal.\u003c\/li\u003e\n\u003cli\u003eCheck trim in a pool with a full and a nearly empty cylinder, then rinse the inflator and dump valves after every dive.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-info-box\"\u003e\u003cp\u003eSpend over £100 with us and you can bring your new kit to one of our instructor-run pool sessions for free, to get confident with it. It is not one-to-one coaching, so you dive it yourself, and kit that has been in the water cannot be returned. We can also help you set up your system in Soho, London when our instructors are teaching there. This has to be arranged in advance, as it is not a walk-in service. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e to arrange it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection id=\"specs\" class=\"product-section\"\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"product-spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eType\u003c\/th\u003e\n\u003ctd\u003eSingle cylinder backplate and wing system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eWing\u003c\/th\u003e\n\u003ctd\u003eHalcyon Eclipse, 30 lb or 40 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eBackplate\u003c\/th\u003e\n\u003ctd\u003eStandard: aluminium. Deluxe: stainless steel. Pro: carbon fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003ePlate sizes\u003c\/th\u003e\n\u003ctd\u003eAluminium and steel: standard, small or long. Carbon: standard or small\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eHarness\u003c\/th\u003e\n\u003ctd\u003eStandard: one-piece webbing. Deluxe and Pro: Cinch quick-adjust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003ePadding\u003c\/th\u003e\n\u003ctd\u003eDeluxe padding on the Deluxe build\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eSingle tank adapter\u003c\/th\u003e\n\u003ctd\u003eStandard and Deluxe: stainless steel. Pro: carbon fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eInflator\u003c\/th\u003e\n\u003ctd\u003eIncluded, with 52 cm \/ 22 in LP hose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eBackplate weight (bare)\u003c\/th\u003e\n\u003ctd\u003eSteel: 2.22 kg standard, 1.83 kg small, 2.52 kg long. Carbon: 0.54 kg standard, 0.45 kg small\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eColours: black as standard, custom colours built to order through Halcyon's configurator\u003c\/li\u003e\n\u003cli\u003eLead time: about a week for black, around 8 weeks for custom colours (Halcyon's estimate at the time of writing)\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection id=\"whats-included\" class=\"product-section\"\u003e\u003ch2\u003eWhat's included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEclipse wing in your chosen lift\u003c\/li\u003e\n\u003cli\u003eAluminium (Standard), stainless steel (Deluxe) or carbon fibre (Pro) backplate in your chosen size\u003c\/li\u003e\n\u003cli\u003eHarness with crotch strap: one-piece webbing on Standard, Cinch quick-adjust on Deluxe and Pro\u003c\/li\u003e\n\u003cli\u003eDeluxe padding (Deluxe build)\u003c\/li\u003e\n\u003cli\u003eStainless steel (Standard and Deluxe) or carbon fibre (Pro) single tank adapter with cylinder straps\u003c\/li\u003e\n\u003cli\u003eInflator with 52 cm \/ 22 in LP hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-notice-box\"\u003e\u003cp\u003eCylinder, regulator and lead are not included. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e for a quote on a complete setup.\u003c\/p\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"product-section product-faq\" id=\"faq\"\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003e\"Standard, Deluxe or Pro?\"\u003c\/h3\u003e\n\u003cp\u003eIf you mostly dive the UK in a drysuit, Deluxe. The steel plate and adapter carry ballast you would otherwise wear on a belt. If you fly with your kit or dive warm water in a thin wetsuit, Pro. The carbon saves weight in your bag. If you want the lowest price and are happy with a plain webbing harness, Standard.\u003c\/p\u003e\n\u003ch3\u003e\"Should I get 30 lb or 40 lb?\"\u003c\/h3\u003e\n\u003cp\u003eFor most single cylinder diving, 30 lb is enough. Go to 40 lb if you carry a heavy steel cylinder, dive a drysuit with bulky undersuits, or like extra margin on the surface. If you sit between the two, ask us.\u003c\/p\u003e\n\u003ch3\u003e\"Eclipse system or Era system?\"\u003c\/h3\u003e\n\u003cp\u003eThe Era wing adds four zippered trim pockets, dual hose openings and a low-profile elbow, and the Era systems cost more. The Eclipse is the proven, simpler wing. If the trim pockets matter to you, go Era. If not, the Eclipse does the job well.\u003c\/p\u003e\n\u003ch3\u003eDoes it come with weights?\u003c\/h3\u003e\n\u003cp\u003eNo. Add the ACB weight system for releasable ballast on the harness, or Halcyon trim weight pockets for fine trim correction. If you want ACB pockets or a weighted single tank adapter built in by Halcyon, contact us before you order.\u003c\/p\u003e\n\u003ch3\u003eCan I use it on twin cylinders?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a single cylinder system.\u003c\/p\u003e\n\u003ch3\u003eCan I get a custom colour?\u003c\/h3\u003e\n\u003cp\u003eYes. Black is our standard colour. Custom builds are made to order through Halcyon's configurator, so allow around 8 weeks.\u003c\/p\u003e\u003c\/section\u003e\n\u003csection id=\"related-links\" class=\"product-section\"\u003e\u003ch2\u003eComplete your setup\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/halcyon-era-bc-system\"\u003eHalcyon Era Deluxe BC System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/halcyon-acb-weight-system\"\u003eHalcyon ACB weight system\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/halcyon-trim-weight-pockets\"\u003eHalcyon trim weight pockets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/wings\"\u003eWings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/halcyon-dive-system\"\u003eFull Halcyon range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection id=\"buy-now\" class=\"product-section\"\u003e\u003ch2\u003eBuy the Eclipse BC System\u003c\/h2\u003e\n\u003cp\u003ePick your lift, then your build, then your plate size, and we'll order it in.\u003c\/p\u003e\n\u003cdiv class=\"product-final-cta\"\u003e\n\u003ch3\u003eOrder yours or talk to an instructor first\u003c\/h3\u003e\n\u003cp\u003eOrder online, or \u003ca href=\"\/pages\/contact\"\u003eget in touch\u003c\/a\u003e and we'll help you choose lift, build and a complete setup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Halcyon","offers":[{"title":"30 LB \/ Standard \/ Standard","offer_id":58186496835964,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Standard \/ Small","offer_id":58186497098108,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Standard \/ Long","offer_id":58186497360252,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Deluxe \/ Standard","offer_id":57811689144700,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Deluxe \/ Small","offer_id":57811689177468,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Deluxe \/ Long","offer_id":57811689210236,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Pro \/ Standard","offer_id":57811689243004,"sku":null,"price":976.0,"currency_code":"GBP","in_stock":true},{"title":"30 LB \/ Pro \/ Small","offer_id":57811689275772,"sku":null,"price":976.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Standard \/ Standard","offer_id":58186496868732,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Standard \/ Small","offer_id":58186497130876,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Standard \/ Long","offer_id":58186497393020,"sku":null,"price":680.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Deluxe \/ Standard","offer_id":57811689308540,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Deluxe \/ Small","offer_id":57811689341308,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Deluxe \/ Long","offer_id":57811689374076,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Pro \/ Standard","offer_id":57811689406844,"sku":null,"price":976.0,"currency_code":"GBP","in_stock":true},{"title":"40 LB \/ Pro \/ Small","offer_id":57811689439612,"sku":null,"price":976.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2524\/3352\/files\/halcyon-eclipse-standard-aluminium-2026-11-12.webp?v=1794487795","url":"https:\/\/oysterdivingshop.com\/products\/halcyon-eclipse-bc-system","provider":"Oyster Diving Shop","version":"1.0","type":"link"}