Features:
USB powered Universal 5V power supply
3.7-5V Supply Pad External 3.7-5V lithium battery power conversion
LED indicator Bluetooth mode long blue light
3.5mm stereo audio interface Standard 3.5mm interface
Output stereo sound source, plug in headphones, connect amplifiers and other devices
Specifications:
Power Supply 3.7V.DC - 5V.DC
SNR 90 dB
THD+N -70 dB
Crosstalk -86 dB
DNR 91 dB
Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP
LOS 10 m