*Output power: 45W
*Frequency response: 100Hz-20KHz
*Signal to noise ratio: >=85dB
*FM scan range: 87.5-108.0Mhz
*Wireless range: 10meter
*Max memory USB/SD: 32GB
*USB Charging: DC 5V
*Battery capacity: 4500mAh/7.4V
*Backup time via wireless mode: Approx 1 hour at max volume
*Charging via USB port (PC): 8-10 hours445