Bluetooth 5.3 TWS DG-B4V33A

DG-B4V33A
*Bluetooth Version: 5.3
 *Chipset: JL6973
 *Profile: HSP, HFP, A2DP, AVRCP
 *Bluetooth Distance: 10-20M
 *Frequency Range:2.4-2.48GHz
 *IPX level: IPX5
 *Sensitivity: 106DB士3dB
 *DB noise reduction: YES
 *Battery: 30mAh *2, 280mAh
 *Driver Size: 13mm
 *Charging port type: type C
 *Charging Time:1.5 hours
 *The numbers of re-charge:2 ~2.5times
 *Charging input(Amps): 30mA for earbuds,280mA for case
 *50% volume Playing Time(ANC on) : 4-5hours
 *50% volume Playing Time on(ANC off) : 6-7 hours
 *100% volume Playing Time(ANC on): 4hours
 *100% volume Playing Time(ANC off): 5hours