Features: 1. Lightweight design allows you to enjoy freedom of movement and complete various tasks easily. 2. USB charging, 80% charge in 30 minutes, full charge in 60 minutes, with automatic stop function. 3. Reinforced copper motor provides stable and consistent power for precision work without shaking or jumping. 4. High concentricity ensures stable clamping and accurate and detailed engraving without slipping. 5. Equipped with noise reduction material and low-noise motor, it runs quietly and without interference. 6. Equipped with multi-functional accessories to meet various creative and craft needs. SpecificationProduct Name: Bestically Engraving Pen. Material: Plastic, Stainless Steel. Power: 2 AA Batteries (Not Included) Suitable for: Metal, Plastic, Glass, Wood, Leather. Length: 4.7 in. Diameter: 0.6 in. Fitting: 2.35mm. Speed: 5000-10000-15000rpm. Power: 10W. Voltage: 4.2 V. Package Includes: 1 set*Bestically Engraving Pen