If you want to do some diving activities,like deep-sea exploration,
hunting or observing underwater nightlife, the FITECH F8 diving flashlight
is built for all diving activities. a maximum output of 800 lumens of
white light , it built-in 3x 18650 rechargeable batteries,Have Power Bank Function
and have USB Type-C Charging port
All the flashlight have the Professional waterproof test,see the video