1. Bluetooth version: V5.1 (JL 6973, true stereo)

2. Speaker: F13MM true copper ring speaker

3. Wireless frequency: 2.4-2.48GHz

4. Transmission distance: > 10 meters

5. Charging time: 1-2 hours (charging power supply 1A/5V)

6. Talking/listening to music time: 4-5 hours

7. Headphone battery 400909, 25mah*2PCS (full capacity), rechargeable battery 601230, 180MA*1PCS with Seiko protection version,

8. F13 true copper ring speaker, speaker sensitivity: 100±3db

9. The earphone shell ABS plain color, the charging compartment shell ABS built-in Ф (silver N45) strong magnet

10. This version is touch function