Features: High fidelity full frequency speaker strengthens super bass and subwoofer with strong sense of sound quality level. You can enjoy surround sound, strong sound especially when playing games and watching movies. BT 4.1 technology gives you marvelous experience like fast pairing, low consumption and stable transmission. When connected, it can help you to pick up hands-free call with built-in high definition mic. Made of environmental-friendly and high density synthetic fiber wood, it can effectively eliminate bad resonance, giving you fuller, shocking sound quality. Besides, up-scale and fine quality makes it an artwork in your home. 3.5mm AUX-IN port can be widely connected with phone, computer, tablet PC, etc. Modes switch between BT, AUX-IN, TF card, multi modes, more choice for music. Built-in rechargeable lithium battery 1500mAh, it provides 4-8 hours of music time and 4-8 hours of talking time. Function parameter: 1. Support wireless Bluetooth connection 2. Support TF card playback 3. Support AUX wired connection 4. Language prompt function 5. Hands-free call function 6. Support FM radio function Specifications: Material: wood Color: doodle, black (optional) BT: 4.1 SNR: ≥75dB Frequency response: 40Hz-20KHz Impedance: 3.5ohm Sensitivity: ≥350MV TF card: support max up to 16GB (not included) Battery: 1500mAh Music time: 4-8 hours Package list: 1 * Speaker 1 * Charging cable 1 * User manual Ps: Regarding the FM function: This wooden Bluetooth speaker has Bluetooth and card insertion as the main function, and comes with FM function. It does not guarantee that the station can be found in every area. If the FM station cannot be received, it will not be treated as after-sales and it is not accepted. Please do not purchase this product if the FM function returns and exchange requirements are unacceptable. FM debugging 1. Insert the audio cable into the AUX interface; 2. Press the MODE button to switch to FM mode; 3. Long press the pause button (about 3 seconds) to enter the automatic channel search mode; 4. After a while, you can switch between different frequencies through the up and down song;