SeaLife Sea Dragon Universal Flash Swimming Caps the diver can release it

the diver can release it to the surface (while tied to a line) a built-in Over Pressure Relief Valve allows the tube to ascend without rupturing

while providing a more streamlined profile

and a serrated edge on top -- best for sawing through rope

3-D Anatomical Strap

Wireless rechargeable battery (factory replaceable)

SeaLife Sea Dragon Universal Flash Swimming Caps the diver can release itThe Sea Dragon universal underwater flash strobe works with all SeaLife DC Series and other cameras with a built in Flash. The Flash offers both automatic and variable power adjustments with an effective UW distance range up to 8feet 2. 5m. The Auto Learn Mode easily syncs your cameras pre flash for easy set up and use with your camera. For best results, we recommend rechargeable Panasonic Eneloop Pro 2550mAh Ni MH batteries (4 not included). The Sea