M1 Specification:
- Brand: Firefly
- Model: M1 TWS
- Color: Black, White, Pink, Blue
- Wearing Type: In-ear
- Material: ABS+ PC
- Net Weight (g): 50g
- Dimensions (cm/ inch): 7.2*3.8*30cm
- Microphone: Yes
- bluetooth Version: V5.0+EDR
- Transmission Distance: 10m
- Impedance: 32Ω
- Frequency Response: 20-20kHz
- Battery Capacity: Charging box: 350mAh, 3.7V
- Earphone: 45mAh*2, 3.7V
- Charging Time (h): 1h
- Working Time (h): 3-4h
- Standby Time (h): 60h
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