Wireless version: BT V5.2.
Frequency: 2.4GHz.
Working range: 10 meters.
Stand-by time: 200 hours.
Playing music time: 5 hours.
Talk time: 5 hours.
Charging time: 4 hours.
DC 5V port: Use the standard USB-C charging cable for power charging.
U stat: It can decode and play MP3 format audio when the USB disk is inserted into the slot.
TF slot: Can decode and play MP3 format audio when the TF card is inserted into the slot.