A13 Smart Audio Sunglasses Bluetooth Earphone(Dark Gray) Filter-Broadband Amplifiers Style: standard version: no speed

Style: standard version: no speed regulation

Carton Size 45cm * 27cm * 31cm / 17

3cm * 1cm / 5

stable not to fall

Suit for games entertainment

A13 Smart Audio Sunglasses Bluetooth Earphone(Dark Gray) Filter-Broadband Amplifiers Style: standard version: no speed1. Transmission range: 10 meters 2. Function: battery display, call function, voice control, multi point connection 3. Bluetooth protocol: 5. 0 4. Channel: bilateral stereo 5. How to use: head mounted 6. Frequency: 2. 402 2. 480GHz 7. Talk time: 4 5 hours 8. Charging time: 2 3 hours 9. Music duration: 3 5 hours 10. Battery capacity: 140mAh 11. Power: 2x1W 12. Size: 155x152x50mm (expanded) 13. Features: listening to music, answering calls, smart voice,