Brand: - Model: RS-821 Emitter Brand: Cree LED Type: - BIN: Q5 Color: White Number of Emitter: 1 Voltage Input: 1.5~3.7V Battery Configuration: 1 x AA/14500 battery (not included) Circuitry: - Brightness: 240LM Runtime: 2~3 hours (manufacturer rated) Number of Modes: 3 Mode Arrangement: High > Low > Fast Strobe Mode Memory: No Switch Type: Reverse clicky Switch Location: Tailcap Lens: Convex Plastic Lens Reflector: - Beam Range: 100m Strap Included: Yes Clip Included: No Accessories/Spare parts: 1 x Head band (38~120cm) 1 x Chinese/English manual Others Features: Water resistant focus adjustable