Feature:1. Adjustable 5‑level speed, with higher working efficiency to better meet your a variety of demands.2. Low‑voltage design, brass motor as the power unit, and with variou kinds of grinding and drilling accessories.3. Come with an USB charging port, you can charge anytime and anywhere, more advantageous to use.4. Work with a suitable grinding head drill pen for engraving, cleaning, polishing, cutting, peeling and polishing.5. Equipped with sophisticated appearance and high grade, exquisite production provides you more convenience.Specification:Item Type: Mini Grinder SetMaterial: ABS + BrassModel: 202Color: GrayVoltage: DC3.7VBattery: Built-in 2000mAh Lithium BatteryApplication: Engraving, cleaning, polishing, painting, cutting, polishing, etc. Package List:1 x Electric Grinder3 x Drill Bit1 x USB Cable2 x Wool Pad 3 x Sand Roll5 x Chuck1 x Saw Blade10 x Polishing Accessories1 x Manual Note:Continuous use should not exceed 15 minutes. Do not block the heat dissipation port during use. When the motor is stuck during operation, turn off the switch in time to avoid burning the motor, and do not recharge when it is completely out of power.