Product parameters: Size: diameter 20.5* height 5cM (8.07*1.97in) Net weight: 0.581kg(1.28lb) Colour: Black Power supply mode: USB direct plug AC power supply, a normal No. 1 battery power supply, the maximum load-bearing capacity of the mobile power supply: 5KG Second gear speed regulation: 2 and 3 revolutions per minute Features： 1. Smooth rotation Streamlined design, high-density combination, more stable and comfortable rotation 2. Mute High-quality motor, silencing design Packing list： USB cable + display stand black.