Bluetooth Version: V5.0, Transmission distance: 10m, A2DP 1.3 AVRCP 1.5, Wireless frequency: 80HZ~16KHz, Battery Capacity: 18650 (1800mAh)/3.7, Transmit Power: 8dB, Music Time : 4.5hrs, Charging time: 5hrs, Speaker unit: Speaker X2 30 20W, Input Charging Standard: DC 5V, Dimension: 249X 214X5 98mm, Color: Black