- Bluetooth 2.1 technology for lower energy consumption but more stable connection and faster transmit speed - Support FM function allows you to listen to your favorite programmer anytime - Bluetooth wireless design for connecting to any Bluetooth enabled smart devices - Built-in 1000mAh rechargeable Lithium-ion battery supplies 3 - 4hrs playing time - Very easy to set up and use, your Bluetooth is ready, your music is ready - Play music directly from TF card, USB and 3.5mm audio devices gives you a convenient playing experience - Made of wooden material makes it very light, easily to carry - Music Mini Speaker with LED Screen (Customized Portable Bluetooth Speaker)