Bluetooth 5.1., Bluetooth profiles: A2DP 1.3, AVRCP 1.6, Frequency: 2400 MHz – 2483.5 MHz, Power: ≤ 10 dBm (EIRP), Output power: 5W, Dynamic frequency response range: 100 Hz – 20 kHz, Charging time: 3h, Music play: 10h, Waterproof IP67, Dimensions: 8.6 x 13.5 x 4.6cm, Weigh: 0.24kg