Cordless rotary multi-tool kit 3.7 v li-ion 1500 mah, model 3v-mhr-k. adjustable speed in 6 speeds from 9,000 to 20,000 rpm with digital speed indicator and battery level indicator. charging via usb 5 v dc connection with usb-a to usb-c cable included, charging time 2-3 h. features led work light. includes carrying case and box with 51 accessories: 4 grinding needles, 1 milling head, 6 grinding stones, 1 brush, 10 cutting discs, 10 sanding papers, 1 disc holder, 4 felt wheels, 1 felt holder, 10 sanding bands, 1 sanding band holder, 1 container bottle, and 1 spanner. dimensions: 160 x ø30 mm