Transducer 43 x 47 mm/ 1.5" Output power 5W RMS Frequency response 110 Hz - 20 kHz Signal-to-noise ratio > 85 dB Battery capacity 1050 mAh Battery charge time 2.5 hours (5 V?1 A) Music play time up to 5 hours (dependent on volume level and audio content) Bluetooth® version 5.0 Bluetooth® profile A2DP 1.3, AVRCP 1.6 Bluetooth® transmitter frequency range 2400 MHz - 2483.5 MHz Dimensions (W x H x D) 90 x 73.2 x 35.8 mm Weight 0.230 kg