Chest Mount Crossover Experienced CCR divers are adding the Dive Rite O2ptima CM to their dive locker as an addition or a replacement for their current unit. For backmount divers who are comfortable with their unit it’s a great option for small passages. For people wanting an upgrade to a [...]

O2ptima CM Review Dive Rite's Chest Mount I dove the O2ptima CM shortly before it's release in 2020. I realized on that demo dive that the successor to the O2ptima rebreather - the chest mounted "choptima" rebreather - was a big deal. It was small, [...]