5 Pcs Rechargeable Pen Light Flashlight - 3 Modes Pocket Flashlight with UV Black Light and Blue Light for Repair Nurse Outdoor Work, 395nm UV Mini Flash Lights

These are so light and cute, super easy to charge with no cords needed, different color light option, with loop just the right size for attaching to jacket or dog leash, or purse, or whatever. I do not yet know how long the charges last but since so simple to plug in to a computer it does not matter. I plan to use when walking the dog at night and gift my extras since bought the bundle.

I like that it uses usb to charge, but would have preferred a jack, like every other decice uses, instead of a plug.The strap is not very secure, as you can see from the picture. I did not pull the ends apart. They separated when I pushed the strap in to examine how it was secured. You're better off either using a piece of cord, knotted on the inside, or going without it.I like that it has a white light and a UV light, but neither is very bright. It also provides a blue light, which I have no use for. Red would have been more useful.It is not waterproof, as the picture implies. It's not even water resistant.

Good value pack of small flash lights. You can keep one in the house and one in your car and one in your backpack or purse. Good to have if you loose something and need a light to find it. USB charging is good, USB C would be better.

Recently found out that a blue light can help identify right and wrong side white on white printed fabrics!

Love the built in usb A to recharge. It's very nice to not have cables to keep track of.The light beam is pretty narrow, and obviously not super high power, so these aren't gonna be the right choice for camping and whatnot, but given the UV and blue lights, I suspect the real intent behind these is for security and nursing and so forth - to have in your pocket, readily accessible for close quarters light. In the case of security, this would be a good tool at the door of a nightclub to check validity of IDs, etc. The UV is great in that regard as it'll highlight the watermarks on official government IDs.