Bluetooth solution: JL6973D4（single mic ENC）
Bluetooth version: V5.3
Support system: Android/Apple/PC
Earphone battery capacity: 30mAh
Charging box battery capacity: 220mAh
Impedance: 16Ω ±15%
Playing time: 4H * 3 times, total 16H (50% volume)
Speaker diameter: Φ13 mm dynamic driver
Sensitivity: 104±3dB
Earphone charging time: about 1.5 H
Charging time of charging box: about 2.0 H
Waterproof grade: structural waterproof
Earphone size: 50.7*44.4*24.4(mm)
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