1. The third gear speed regulation is 2 revolutions-4 revolutions-6 revolutions per minute respectively2. The maximum load is 4KG-3KG-2KG according to the different rotational speed.3. Forward and reverse function.4. Set the round-trip rotation function according to the rotation angle, and the round-trip rotation angle can be set as 45-90-180-360 degrees respectively.5. There are four power supply modes to choose from, which are USB direct-plug AC power supply, USB power supply connected to power bank, three ordinary AAA batteries, and 18650 rechargeable lithium battery.6. Switch descriptionReminder that this product is not equipped with a battery, if you need to charge it, please use it with a 18650 flat-head rechargeable battery.1. Power on: any key to power on, short press to operate.1.Power ON: touch any keys.2.R/L: switch clockwise and counterclockwise, short press to operate.2. R/L: switch to clockwise or counterclockwise.3.SR: Speed switch, 2, 4, 6 laps per minute, short press operation.3.SR: speed regulation, 2r/4r/6r/min.4. A S A: Angle switching, 45-degree round-trip, 90-degree round-trip, 180-degree round-trip, 360-degree round-trip, short press operation.4.ASA: angle regulation, 45/90/180/360 circulation.5.IN 5V: MicroUSB 5V external power input.5.IN 5V: MicroUSB 5V DC IN.6. Shutdown: any button to shut down, long press for 3 seconds to operate.6.Power OFF:long press any keys for 3 seconds.7.18650 lithium battery or 3 AAA batteries for power supply, (battery not supplied)7.1865 lithium battery or 3 AAA battery(not include).8.18650 charging status indication, the IN 5V port is charging with diffused red light, and the IN 5V port is fully charged with diffused green light.8.Charge LED indicator(built-in): red-charging, green-fully charged.