Specifications: Name: Portable Rechargeable Electric Nail Drill Machine MJP097 Properties: Electric Nail Drill Machine & Nail Dryer UV Lamp & Power Bank ( 3 in 1 Nail Drill Machine ) Battery content : 2,000 mAh （Can Use 8-10 House）, Can charge the phone. Nail lamp power : 9 Pcs lamp beads 18W nail lamp，90 Seconds Fast Dry Nail Art Nail polisher speed (max) : 35000RPM , 2 minutes to quickly polish nails. Rotation direction : forward and reverse rotation Speed control : 0~35000RPM adjust. MJT0021 Properties: Electric Nail Drill Machine Battery content：1,200 mAh （Can Use 6-8 House） Nail polisher speed (max) ：30,000RPM,2 minutes to quickly polish nails, Rotation direction: forward and reverse rotation Speed control : 3 blocks. Feature: 1.Low noise and vibration, very comfortable. 2.Smart LCD Screen Display, Lightweight with Jacket Hook 3.Efficient Heat Dissipation & With Safely Protection Device 4.2,000Amh Rechargeable, Can work 8-10 hours，1,200Amh Rechargeable, Can work 5-7 hours， 5.Portable design, easily to use. 6.Speed control knob, easy to operate. 7.Forward and reverse operation switch. 8.Suitable for natural nails and artificial nails. 9.Multi use: carving, sanding, polishing, shaping and so on.