This excellent BC inflator/reg is in its 5th generation with dramatically improved work of breathing. Sleek ergonomic inflate/deflate controls allow for pinpoint buoyancy control. Test-proven breathing performance and cracking effort surpasses many traditional downstream second stages when it comes to ease of breathing. Dive/pre-dive switch lets you detune the unit when not in use, eliminating free flows. Flexible purge cover is easy to locate and depress for quick clearing Power inflate and deflate buttons are positioned on top of the housing for easy buoyancy control Power inflate button features a lighter lever for easy inflation Power inflate and deflate buttons can be differentiated by colour and touch due to their different shapes and sizes, improving ascent control and safety when inflating or deflating the BC CE certified (EN250A>10ºC/50°F warm water test) as a second stage regulator