Kaisi EG160 6 Gears Adjustable Electric Grinder Engraving Kit Features: 1. EG160-Powerful motor, five-speed regulation precise control, adopts high-speed pure copper motor, no-load speed can reach 23,000 RPM, strong power and stable performance, will not heat up even after long-term use 2. 6 Adjustable Power Levels for Precision: Control sanding intensity from 8000RPM to 23000RPM. Ideal for delicate jewelry polishing or heavy-duty metal grinding. 3. Ergonomic Design for Comfort: Lightweight body with textured grip reduces hand fatigue during extended use. 4. Long-Lasting 8V 1100mAh Battery: Charges fully in 2 hours, powers up to 5 hours of continuous work. 5. All-in-One Storage Case: Compact case includes all accessories – perfect for on-the-go repairs or workshops. 6. 61 accessories, rich accessories, all-round assistant, it meets the needs of various scenarios 7. It is equipped with a metal chuck lock design, making the installation and disassembly of the grinding head easy and convenient 8. The clamping is stable and at the same concentric height 9. Equipped with a 1100mAh high-capacity lithium battery, it can be fully charged in just 110 minutes 10. Real-time battery data alerts allow you to have a clear understanding of your battery level, eliminating any worries Specification: 1. Input voltage: DC 4.2V 2. Output voltage: DC 3.7V 3. Torque: 400gcm 4. Weight: 160g Package includes: 1 x Electric Grinder 61 x Sanding Accessories