Product No: H2019


The decades of expertise behind Mares and rEvo rebreathers have combined to create a unique semi-closed unit like no other. For divers seeking a revolutionary SCR approach in a system that is easy to use, natural to dive, designed with all levels of diver in mind and developed to provide the utmost security...

Product Information


■ Height: 54 cm
■ Width: 40 cm
■ Depth: 22 cm
■ Unit weight: 12 kg (without regulator set)
■ Complete non-deco version weight: 13.4 kg
■ Complete full deco version weight: 14.8 kg

■ Two (2) scrubber canisters, each containing 1 kg of CO2 absorbent that can be refilled by user
■ Two (2) integrated weight pockets, each containing a maximum of 2.5 kg of weight
■ Fully adjustable harness system, from XS to XXL
■ Safety gag strap on mouthpiece
■ 2 oxygen sensors
■ Constant oxygen fraction supplied to the diver, adjustable during diving
■ Reverts automatically to full nitrox breathing in case of failure
■ Remaining scrubber time calculated by the dive computer
■ No tools required for preparation, use, cleaning

■ Maximum recommended depth using one stage cylinder as gas supply, no decompression: 30 m
■ Maximum allowed depth using two stage cylinders as gas supply: 40 m
■ ppO2 during use: minimum 0.22 bar, maximum 1.60 bar
■ Water temperature: minimum 4°C, maximum 34°C
■ Allowed nitrox mix: minimum 30%, maximum 99%
■ Approved scrubber material: Sofnolime 797
■ Scrubber material endurance depending on temperature and metabolic oxygen consumption: calculated by the dive computer (i.e. at 15°C or higher, with medium/high oxygen consumption, duration is > 3 h)

■ 75 RMV at 40 m, CO2 production of 3 l/min for 5 min

■ Three sets of redundant electronics, each with an individual battery system
■ All battery systems can be charged from one single point
■ 2.8” full color, high contrast dive computer screen
■ User adaptable gradient factor decompression algorithm
■ HUD with clear GOOD / FAIL indication
■ Approved to 40m



  • Horizon Leaflet
    Languages: EN, IT
  • Horizon Instruction Manual
    Languages: EN, DE, FR, IT

Delivery & Returns


Online purchases on mares.com are only enabled for Italy. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers.

Delivery times are 3-5 working days in Italy.



If you are not satisfied with your order, you can return it quickly and easily.

You can decide to return any products purchased on mares.com within 30 days of delivery. To return items, use the same box they were received in, complete the returns label found here with shipping details and attach it to the box. Remember to insert the delivery number found on page 1 of the delivery documents.


To allow you greater freedom, we have not chosen a courier service with which you need to return the package, you are free to choose your preferred service provider.

Please remember that shipping costs are your responsibility.


At the moment, we cannot offer exchanges on our products. If you would like a different size, please return the article for a refund and purchase a new size. If you still have any doubts, you can write us an email at shop@mares.com, our Customer Service team will be happy to help.