LDNIO Mini Wireless Bluetooth Bass HIFI Speaker [ BTS13 ] Features # Bluetooth 5.3 # Upgraded sound quality # Ambient light # 4H+ playing time # Noise reduction calls # Lanyard design # Line in SD card mode Product Ambient light EQ sound effect, it flashes with the rhythm of music. Noise reduction Actively reduce noise, clear calls even in noisy environments. 4H+ playing time 2000mAh super big battery capacity bring more than 4h playing time. Multi music mode Line in/SD card mode, automatically decode normal audio forms. Specs Model BTS13 Bluetooth Version 5.3 Bluetooth protocol HSP/HFP/A2DP/AVRCP Transmission distance ≥10M RF power level 2.5mW[4dBm] Speaker specifications 4ohm 5W*2PCS Frequency response F0-20KHz FM radio range 88MHz~108MHZ Speaker sensitivity 85dB Audio output power(RMS) 10W Max Frequency Response: 20Hz~20KHz-3dB Channel seperation ≥60 dB S/N 90dB Battery capacity 2000mAh/7.4Wh Charging current 5V/1A For More Info. Click Here For More Ldnio Product Click Here