Zebralight SC600 Mk II L2 18650 XM-L2 Flashlight Cool White PID thermal regulated outputs (1100Lm and 670Lm) One 18650 size (up to 69mm long) 3.6/3.7V li-ion rechargeable. Batteries are not included. 2.75 oz (78 gram) without battery Smart user interface provides fast and easy access to all brightness levels and beacon-strobes Waterproof to IPX7 (2 meters, 30 minutes)