CR-9 Metal Retro Head-mounted Wireless Bluetooth Earphone(Silver Black)

1. Bluetooth protocol: V5.4
2. Transmission range: 10m
3. Frequency range: 2.402-2.480GHZ
4. Power handling: 20mW
5. Resistance: 32 ohms
6. Battery capacity: 400mAh
7. Charging time: 2.5h
8. Standby time: 180h
9. Battery life: 38h
10. High-resolution sound quality, upgraded independent audio cavity, restore HiFi sound quality
11. Game mode, zero sense delay, audio and video synchronization
12. Ergonomic design, rotatable axis, comfortable to wear
13. Foldable, lightweight, convenient and portable storage
14. Zinc alloy arm, more upscale texture
15. Zero sense memory sponge, cloud wrapping feeling
16. Support AUX, change to wired mode in seconds, can be used even without power