Mini electric carving pen mini electric grinding and polishing machine marking number pen lithium battery

Small electric mill power display with locked rotor protection gear adjustment, compact and lightweight

Usage method： Press once within 2 seconds for 1st gear, press twice for 2nd gear, press three times for 3rd gear

                            Press the shutdown button after more than 2 seconds of startup

                            3rd speed regulation: 1st gear 5000 rpm, 2nd gear 10000 rpm, 3rd gear 18000 rpm

                            Built in lithium battery with 300MAH charging cycle for 800 times