This is an UV ultra violet LED flashlight with 9 LED which secures its brightness when you are using it in the evening. It's aluminium body makes it light weight and portable. Also it has a service life as long as 10000 hours. It it perfect for the use of camping， outdoors and also home use. Length: 9.5 cm Diameter: 2.9 cm Instruction: Press once will continue on. Press again will turn it off. Powered by 3 AAA batteries (not included) Package:5 x UV 9 LED Flashlight