Product parameters: Bluetooth specification: v5.0 Wireless transmission range: 10M Battery capacity: about 2400mAh Built in voltage: 3.7V Playback time: About 5h Speaker specification: φ 45mmx2 Speaker power: 5Wx2 Size: 204x71x62mm Weight: about 558g Features: 1. Support: Bluetooth/USB/AUX/TF card/FM radio 2. The device can be charged as an external battery 3. Portable mini product, braided rope is easy to carry, suitable for sports hiking, travel, beach 4. Hands-free call microphone 5. With FM radio function Accessories: 1 *Bluetooth speaker 1 *User Manual 1 * USB cable 1 * auxiliary cable