1. LED power digital display, light and non-sensing to wear2. The craftsmanship is upgraded, the surface is pearly and shiny, and the appearance is more cool3. Smart touch, get rid of the complicated, one-key operation can complete a variety of instructions4. Equipped with 13mm metal speaker unit, in-ear immersive sound quality5. Regardless of the main and auxiliary ears, the left and right ears are connected independently.6. Charging compartment capacity: 300 mAh, earphone battery capacity 30 mAh x 27. Use time: 20 hours8. Standby time: 300 hours9. Transmission range: 10 meters10. Function: noise reduction, power display, call function, voice control, support music11. Bluetooth protocol: 5.212. Channel: bilateral stereo13. How to use: earplugs14. Frequency response range: 20Hz-20KHz15. Carrier frequency: 2.402GHz-2.485GHz16. Charging interface: Type-C

http://olla.gr/tws-wireless-bluetooth-headset-in-ear-space-capsule-gaming-headset-transparent-black/