Size: diameter 28 ~ 107mm Body weight: about 87g (including battery) Material Material: Aluminum Country of origin: China The set includes accessories: body, MicroUSB cable, pouch, strap, dedicated rechargeable battery (Li-ion14430) Brightness: boost mode / 220 lumens, Hi / 130 lumens Use battery: Dedicated rechargeable battery (Li-ion14430) Use light source: chip type white LED ~ 1 lamp Practical lighting: Hi / 3 hours, Low / 18 hours, Flash / 9 hours Charging time: about 2 hours Features: instant off switch, slow writing off switch, drip-proof specification The maximum irradiation distance: about 75m Irradiation characteristics: focus control Increasing the display number