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1. Bluetooth version: V5.0 2. Support protocol: RX (A2DP, AVRCP, HFP), TX (A2DP) 3. Working frequency band: 2.402GHz -2.480GHz 4. Audio coding: SBC 5. Working current: RX is less than 22mA, TX is less than 35mA 6. Built-in battery: 250mAH 7. Charging current: about 200mA 8. Charging time: about 2 hours 9. Bluetooth distance: greater than 10m (open place) 10. Charging method: Micro USB 5V/0.5A 11. Input/output connection mode: AUX interface 12. Compatible: Android, IOS system mobile phone and PAD, and Bluetooth 13. Speaker or headset connection use 14. Weight: about 23g 15. Size: about 5.2x1.3 cm
