SNJ-3681 Mini Engraving Pen Wireless Polishing Electric Grinder, Style: Silver+Grinding Head

1. Power: 10W2. Battery voltage: 4.2V3. Battery capacity: 300mAh4. Charging port: Type-C/USB-C5. Speed: 5000-10000-180006. Clamping range: 2.35mm7. Collet depth: 25mm8. Weight: about 40g9. Size: about 12 x 1.6cmFeatures:1. Using noise reduction material, with bass motor, low noise operation2. Tight copper chuck, clamping firm and not easy to move, rotating spindle connection tight, high concentricity3. Wide range of applications, mold polishing and grinding, crafts trimming and shaping, die casting deburring, jade / stone / wood and bamboo carving4. High-speed rotation of pure copper motor, continuous and stable output, double-layer protection5. Multiple protection, temperature control / charging / overvoltage protection, safe and durable6. Wireless operation, lightweight body, easy to use