Features: 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. 2. Fit for Phone Under 6.7inch: Suitable for most 6.7inch 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. 3. No Harm and No Noise: High quality metal bracket is smooth and burr-free, wont scratches hand and mobile phone, low noise, wont affect sleeping when shaking at night. 4. For Two Phone: The front and back of this swing device can hold mobile phones. 5. Easy to Install and Use: The swing device can be charged by USB cable. Notice: 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. Specification: Type: double mobile phones shaker Product principle: electromagnetic principle Material: Plastic + Magnets Applicable phone: within 6.7in Power supply: USBincludes:1 x mobile phones shaker 1 x charging cable