Parameters:
● Bluetooth version: 5.3
● Chip model: 6973D4
● Headphone battery capacity: 70mAh*2
● Battery capacity: 300mAh
● Unit size: 14mm (16Ω±15% (at 1kHz))
● Sound pressure standard: 105±3dB (at 1kHz, 0.179V)
● Frequency response range: 20 Hz - 20 kHz
● Bluetooth band: 2.402-2.480GHZ
● Bluetooth distance: >10M
● Standby time: 100H
● Playback time: 12H
● Call duration: 11H
● Earphone charging time: 1.5H
● Charging time: 1.5H
Bluetooth protocol: A2DP/AVRCP/HFP
● Decoding format: SBC/AAC
● Monoamine