Model: A31
Bluetooth Chip: JL-AC7003F4
Bluetooth Version: V5.2
Sensitivity: 103dB±3dB
Drive Unit: 40mm
Working Frequency: 2402-2480MHZ
Frequence Response: 20HZ-20KHZ
Impedance: 32Ώ
Transmission Distance: ≥10m
Battery Capacity: 250mAh
Charging Time: About 2H
Standy Time: About 322H
Music Time: About 20H (70% volume)
Call Time: About 15H (70% volume)
Charging input standard: Micro USB，DC5V，500mA
Support Bluetooth protocol: HFP1.5/HSP1.1/A2DP1.3/AVRCP1.5
