Product Parameters: Size: 146*72*50mm Weight: 280g Bluetooth version：V5.4 Battery Capacity：1800mAh/3.7V Frequency Response: 80Hz-20KHz Playtime: 5H(Max vol),16H(Med vol) Audio Output: 8W Transmission distance: 10m Material: Plastic&Metal Color：Space Grey Charging Input: Type-C Play Mode: BT, TF card, FM radio Model: OBS-382 Product Features: