● Bluetooth version: 5.3
● Chip model: AD6973D4
● Headphone battery capacity: 30mAh*2
● Charging bin battery capacity: 230mAh
● Unit size: 13mm (32Ω±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
● Playing time: 4.5H
● Call duration: 3.5H
● Earphone charging time: 1.5H
● Charging time: 1.5H
Bluetooth protocol: A2DP/AVRCP/HFP
● Decoding format: SBC/AAC
● ENC: Monomic ENC