• Support Bluetooth-compatible V5.3
• Support Bluetooth-compatible receive/support Bluetooth-compatible transmit
• Power on automatically connects back to paired Bluetooth-compatible devices
• Auto power off after 3 minutes of no device connection
• Music playback time of about 7.5 hours on a full charge
• Bluetooth-compatible support A2DP, AVCTP, AVDTP, AVRCP, HFP, SPP
• Support Bluetooth-compatible stereo music DSP technology
• AUX audio in/audio out
• Support TF card playback

Specifications:

• Charging limiting voltage: 5.25V
• Charging current: 300mA
• Operating current: screen on state: RX mode: 62mA; TX mode: 72mA
• Screen off state: RX mode: 20mA; TX mode: 30mA
• Power off current: 20uA
• Charging time: about 35 minutes
• Working time: RX mode: about 7.5H; TX mode: about 5H
• Battery capacity: 300mAh
• Bluetooth-compatible version: Version 5.3
• Bluetooth-compatible sound processing: with DSP technology and A2DP (Advance Audio Distribution Profile) function
• Bluetooth-compatible frequency: 2.402-2.480GHz
• Bluetooth-compatible transmission distance: straight line <10M
• Bluetooth-compatible microphone effective distance: 0.5~2M