QIAN Air31 TWS Wireless Earphones Transparent in Ear Headset ENC Sports Headphones LED Power Digital Display Stereo Sound Earbuds White Brand: QIAN |
MPN: LJ12-1609-C731
Bluetooth version: V 5.1 +EDR;
Charging time: 2H;
Battery life: 20 hours in total;
Support Agreement: HSP 1.2 /HFP 1.6 /A2DP 1.3 /AVRCP 1.6;
Headset charging time: 1.5H;
Frequency: 2.4GHZ - 2.4835GHZ ISM BAND;
Working distance: 10 m (barrier-free straight line)