V1 TWS Earphone Features:
- Brand: Firefly
- Model: V1
- Color: Black
- bluetooth: V5.0
- Transmission distance: 10 meters
- bluetooth protocol: HFP / A2DP / AVRCP
- Sensitivity: 90±3dB
- Resistance: 32Ω
- Frequency Response Range: 20-20000Hz
- With Microphone: Yes
- Audio signal to noise ratio S / N: 100dB
- Charging box charging time: about 2 hours
- Charging box to charge the headset: 3 times
- Earphone charging time: about 1 hour
- Listening time: about 4-5 hours
- Standby time: about 140h
- Talk time: about 4-5 hours
- Charging port: USB
- Wireless frequency: 2.4GHZ
- Working frequency: 2.402GHz-2.480GHz
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