BLACK & BLUE NITECORE TUBE Tiny USB Rechargeable LED Light 45 Lumens T-Series waterproof COMBO With 1x LIGHTJUNCTION KEYCHAIN Light High performance LED produces 45 lumen on high Built-in rechargeable Li-ion battery provides a runtime of up to 48 hours on low Integrated intelligent Li-ion battery charging circuit (micro USB charging port) Single multi-stage switch offers access to all functions via one-handed control Features two brightness levels and infinitely variable output mode