Features:_x000D_1. Automatic Steps Earning Device: Recommended for those who want to increase the number of walks With this phone swing device, pretend you are running, it record steps automatically._x000D_2. Fit for Phone Under 6.4inch: Suitable for most 6.4inch phone or less, apply to most of the APP like smart bracelet, Wechat movement, etc. It can also be used as a mobile phone holder._x000D_3. No Harm and No Noise: High quality metal bracket is smooth and burr-free, won't scratches hand and mobile phone, low noise, won't affect sleeping when shaking at night._x000D_4. For Two Phone: The front and back of this swing device can hold mobile phones._x000D_5. Easy to Install and Use: USB charging or 4 AA batteries not included for power supply._x000D_ _x000D_Notice:_x000D_1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement._x000D_2.The battery is not included._x000D_3. Do not insert the battery when USB charging._x000D_Specification:_x000D_Type: Phone Swing Device_x000D_Material: metal plastic_x000D_Power supply: USB charging or batteries 4 AA batteries need to be prepared yourself._x000D_Applicable phone: Recommended for mobile phones within 6.4 inches._x000D_Duals phone version: Both the front and the back can hold mobile phonesPackage List:_x000D_1 x Phone Swing Device_x000D_1 x charging cable