The 6.5"" party speaker features a 5.3 Bluetooth Version, 10m range, Jl AC6966B chipset, 5000 mAh battery, 9V, 1.5A charging input, 4-5 hours charging time, 2.5-8 hours playtime, 65 Hz-20 kHz frequency response, 56dB sensitivity, 79dB signal to noise ratio, 40W Rms power output.