This is the AK Interactive Cordless Rotary Tool

MINI TOOL FOR MODELERS.
USEFUL FOR WORKING ON THE ASSEMBLY OF METAL, PLASTIC OR RESIN MODELS.

3 speeds: 5000 / 10000 / 18000 rpm
Work rate: 10W
Voltage: 3.7 V
Battery Capacity: 280mAh

Included accessories:  Saw blades, sanding heads, burr bit set
The accessories are easily and securely attached thanks to two opposing
Allen head screws (key included).
USB charging battery / 3.7V power chargers can be used.