Photography 360 Degree Circular Automatic Rotation Remote Control Automatic Turntable Jewelry Display Stand Base, Suitable for Photo Studio Shooting Note: Product Size: 138*35mm Power Supply Mode: USB Power Supply/Storage Power Supply/External Battery (Battery Not Included) Features 1. Third gear adjustment The speed is 2-4-6 revolutions per minute respectively. According to different rotation speeds, the maximum carrying capacity is 4kg-3kg-2kg. 3. Forward and reverse function. 4. Set the round-trip rotation function according to the rotation angle. The round-trip rotation angle can be set to 45-90-180-360 degrees respectively. 5. There are four power supply modes to choose from: USB direct plug AC power supply, USB power bank power supply, three ordinary AA batteries, 18650 rechargeable lithium battery power supply