Miniature Electric Engraving Pen Rechargeable

Product information :
Style: 108+58 set
Power supply voltage: 3.7
Power supply type: rechargeable-lithium battery
Method of use; Press 1st gear once, 2nd gear twice and 3rd gear three times within 2 seconds.
Press Shutdown more than 2 seconds after startup.
Speed regulation in 3rd gear: 5000 rpm in 1st gear, 10000 rpm in 2nd gear and 18000 rpm in 3rd gear.
Built-in lithium battery 300MAH charging cycle 800 times.
 108 sets：108+letter flowers and plants+30 grinding needles+D needles+3 stainless steel cutting pieces+connecting rods

Packing list:

1 carving pen
1 data cable
58 piece set * 1