1. Power supply AC adaptor.
2. Machine size: 140(L) x 25(W)mm.
3. RPM: 18000-20000.
1. Function: engraves any surface. 2. Power supply: AC odaptor. 3. Machine size: 140(L) x 25(W) mm. 4. Machine weight: 0.36kgs. 5. Body material: ABS. 6. RPM: 18000-20000. 7. Accessories: with 7 tips. 8. Packing: blister + card inner: 6 pcs carton: 36 pcs N.W.: 18 kgs G.W.: 20 kgs Cuft: 3.36’.