2 Pack NiteCore TUBE USB Rechargeable LED Keychain Light 45 Lumens - All Color Variants with Lightjunction Keychain Light (Black & Pink) 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) Features two brightness levels and infinitely variable output mode Impact resistant to 1.5 meters