Yeelight Blue is designed for BLE (Bluetooth 4.0 low-power) designed an intelligent lighting system scenarios. Installation Yeelight Blue APP, can be controlled around Yeelight Blue lighting equipment, lighting effects to achieve control, scene control, timer switch and other functions. Please use the Android system version is greater than 4.0, and supports Bluetooth 4.0 BLE devices for use. For more information, please visit the official website Yeelight (www.yeelight.com).