Use these small profile Uv torches to charge your flashers, lumo squid, lumo tubing or glow sinkers before sending them into the depths.
These take 2x AAA batteries and have a clip attached for hanging on anything around the boat.
A very handy little torch for general fishing too.
I use these to pick colours and see how a fish would see the properties blending together under sunlight exposure.
Or if I walk into a tackleshop I can see what the soft plastics do or any lures before purchasing.
Please note, these are UV and should not be directed into eyes for any length of time.