W41 Charm BT headphones Brand New

1. BT version: v5.3. Chip: AC6955F.2. Supported protocols: A2DP, AVRCP, HSP, HFP.3. Transmission distance: 10m.4. Transmission frequency: 2.4GHz.5. Speaker unit: 40mm.6. Impedance: 32Ω ± 15%.7. Frequency response: 20-20000Hz.8. Sensitivity: 98dB ± 3dB.9. Battery capacity: 200mAh.10. Charging input: DC5V, Micro-USB.11. Charging time: 2 hours.12. Talk / music time: 7 hours (80% volume). Standby time: 120 hours.13. Lightweight, soft folding earcups, adjustable headband.14. Supports songs switching, songs play / pause, volume adjustment.15. Supports BT, TF card, AUX playback modes.16. With microphone.17. Accessories: Micro-USB charging cable × 1, AUX cable × 1.18. Sizes: 182 × 170 × 71mm.19. Weight: 157g.