The TLR-7 X features a specialized clamp system and includes high and low paddle switches to match your shooting style. Multi-fuel design - runs on one rechargeable SL-B9 battery pack or one CR123A lithium battery. Features500 lumensFront-loading battery capability"Safe-off" feature prevents accidental activation, saves batteriesInterchangeable paddle switches BatteryMulti-Fuel: Accepts one SL-B9 rechargeable battery pack or one CR123A lithium batterySL-B9 battery pack charges within 2.5 hours via USB-C cord or bank charger; rechargeable up to 500 cycles Material6000 Series machined aircraft aluminum with black anodized finishSwitch housing: Impact- and chemical-resistant engineered polymerHigh temperature, shock-mounted, impact-resistant BOROFLOAT glass lensIPX7 waterproof to 1m for 30 minutes DimensionsLENGTH: 2.58 in (6.55 cm)WEIGHT: SL-B9 2.64 oz (74.8g) // CR123A 2.48 oz (70.3g)