● Bluetooth: 2.1+EDR
● Operating voltage: 3.7V
● Built-in Microphone
● Charging Voltage: 5V
● Support TF Card, FM function
● Battery: 520mah
● Audio Socket: 3.5mm stereo jack
● Battery Charge time:  ≤3h
● Power supply: Lithium battery or USB cable
● Playback time: 2.5-3H　 　
● Power: 3W
● Frequency: 60Hz-18KHz　 　
● SNR≥95dB
● Distortion Factor: ≤0.5%