Gear: Three gears (low 30%-medium 60%-high 100%) Input voltage: 3-4.5V (One 3C power battery, some batteries have insufficient power and cannot .) Output power: 5-10W Charging port: Type C Charging current: around 1A; Diameter: 20.5mm;Charger: Suitable for most chargers on the market (fast charging, slow charging are both acceptable, regardless of model) ;Application scope: Flashlights, small fans, mobile , micro polishing machines, etc., widely used., Manufacturer: Ounfhtrttk