3. 30 running hours and 100 speeds: 5000mAh large capacity battery provides hours of working time (depending on different speeds). Adjust the appropriate speed by pressing the power button repeatedly. 2. Neck soft glue connection, multi angle adjustment, liberation of hands, sports can also wear. 1. cut design, more uniform air outlet; Turbine fan blades to avoid hanging hair and prevent dust; 4. Portable and practical: suitable for outdoor work, gym, , lawn mowing, yard work, leisure, walking, driving, traveling, camping, etc.