Zebralight SC600w 18650 XM-L2 Flashlight Neutral White w/Olight 3400 mAh 18650 Rechargable Battery Battery capacity indicator (LED flashes 1-4 times, 4 short clicks to start) Automatic stepping down from High to Medium, and from Medium to Low when battery capacity is low Smart user interface provides fast and easy access to all brightness levels and beacon-strobes. Precision machined unibody casing from premium grade aluminum bar stocks Waterproof to IPX7 (2 meters, 30 minutes)