Specification:                Product name:       Nitecore T Series TUBE-RL USB Red Light LED Keychain           Brand:       Nitecore           Model:       TUBE-RL           LED:       High performance LED           Runtime:       1 h 0 m \/ 0.04 d           Battery Configurations:       Rechargeable Li-ion (included)           Switch Type:       clicky           Switch Location:       body side of the light           Max Output:       13 lumens           Color:       black           Weight:       9g (with battery)           Size:       56.5mm x 21mm x 8mm (length x width x height)   Features:!#!amp!*!middot;Lightweight and handy design!#!amp!*!middot;Featuring high power LED!#!amp!*!middot;Red light source output up to 13 lumens!#!amp!*!middot;Integrated intelligent Li-ion battery charging circuit (micro-USB charging port)!#!amp!*!middot;Built-in rechargeable Li-ion battery provides runtime up to 1 hour!#!amp!*!middot;Single switch offers easy one-handed operation!#!amp!*!middot;Constructed from durable Polycarbonate materials!#!amp!*!middot;Dual metal key ring connector withstands up to 77lbs weight(35 kg)!#!amp!*!middot;Impact resistant to 1.5 metersPackage included:1 x Nitecore T Series TUBE-RL USB Red Light LED Keychain1 x Key ring