Hrph 4-inch Vanes 3 Speeds Portable F95B mini USB Rechargeable Cooling Palm Leaf Fan with 18650 li-ion Battery

Operating instruction:
1. Yellow button: Battery activation button.
2. Green button: Click shift button after activate battery, the fan will cyclic shift, press once to change a speed, the program is “power on – 1 speed -2 speed – 3 speed-power off”.