BRISBANE Features: Total Playtime: 10 hours Connect two speakers Water-resistant (IPX5) Bluetooth 5.0 Volume controls Driver unit: 52 mm Driver Power: 2 x 10W Compatible with Android and iOS Specifications: Driver unit: 52mm Driver power: 2 x 10W Sensitivity: 80dB+/-3dB Impedance 4±3﹪Ω Frequency: 80 - 20.000 KHz Working time: 10 hrs Charging time: 3 hours Stand-by time: 90 days Charging Type: Micro USB Battery type: Lithium-ion battery/8000mAh Battery watt hours: 18.5Wh Bluetooth Version: V5.0 Working Range: >10m Mic Distance: 0.5m Supporting codecs : SBC, MP3, AAC