HR 2nd Stage

Product No: 416412


Simplicity combined with important features results in the second HR stage. The body in technopolymers, the regulation of the respiratory effort and the possibility of being opened underwater place it in the world of technical diving. It is sought after in the market to be used for: stage, sidemount or inserted in backmount configuration.

Product Information


Mares has designed the second stage HR, for the purpose of enriching their offer with a simple item, yet fitted with important features. The technopolymer body makes it ultra-light, and offers it a very important aesthetic character. Regulations on the respiratory effort and the possibility of being open underwater places this device in the world of technical diving. Finally, its flexibility in use makes it highly sought after in the market for: stage, sidemount or inserted in backmount configuration.

The key features of the 2nd Stage HR are:
• Suitable for stage, sidemount, rear main, reserve or "hard breathing" configuration
• Breathing effort adjustment
• Simple, ultralight and excellent performance technopolymer body
• Pad - pneumatically assisted design
• Flush button oversized
• Miflex XT-Tech hose
• Can be opened and cleaned or adjusted under water


Ultralight Technopolymer
Second stage weight:
232g / 8.2oz
Hose type:
Miflex XT-Tech Hose
Second Stage 1:
Technopolymer second stage
Second Stage 2:
Pneumatically assisted valve
Flow Rate (STP):
560l/min - 20cuft/min
Weight (without hose):
225g / 8oz
Hose length:
110cm / 43.3in


Delivery & Returns


Online purchases on are enabled for Italy, France, Spain, Germany, Austria, Netherlands, Luxemburg, Belgium and Finland. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers. Products shipped in other countries are entrusted to DHL couriers.

Delivery times are 3-5 working days.



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

You can decide to return any products purchased on 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.


You will receive the total refund on the same payment method you used to place your order, within 14 days after your return has reached our warehouse. 


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, our Customer Service team will be happy to help.