The Prism 2 BOV is the perfect accessory for your Prism 2 eCCR. It is a lightweight and high performance DSV (Dive Surface Valve) and regulator (BOV – Bailout Valve) in one which is a direct bolt-on for your rebreather.
 
The BOV is easily installed by replacing the standard DSV. A BOV is considered as basic safety equipment by many professionals. This BOV meets the requirements for training in Technical rebreather courses.