Brand: RUSTU Model: R40S Material: T6063 T6 Aluminum alloy Emitter Brand: Cree LED Type: XM-L BIN: T6 Color: Cool white Number of Emitters: 5 Voltage Input: 4.2V Battery Configuration: 4 x 18650 (not included) Circuitry: 10A Brightness: 4000lm (manufacturer rated) Runtime: 4 hours at mid mode Number of Modes: 5 Mode Arrangement: Hi > Mid > Lo > Fast strobe > SOS Mode Memory: No Switch Type: Reverse clicky Switch Location: Tailcap Lens: Tempered optical glass lens Reflector: Aluminum smooth / SMO Strap Included: Yes Clip Included: Yes Beam Range: 300 meters Other Features: HA-III surface; IPX8 waterproof Certification: CE Other Accessory: 1 x O-ring 1 x Carrying strap