From Manufacturer
Waterproof, impact resistant, measuring under 2" long, and weighing just half an ounce with the battery, the i1R 2 PRO Rechargeable LED Key Chain Light from Olight may become your favorite personal-sized light.
A small twist of the head activates the low mode, and a further twist changes it to the high output. In keeping with its minimalist design, the custom-designed, rechargeable, 130mAh, 3.7V lithium-ion battery charges via a USB-C charging port that maintains the waterproof rating without having to disassemble the light to get to the battery. A USB-C charging cable is included.