Features:
1. Bluetooth 5.4 chip, lower power consumption, more stable signal, low latency and no lag. Master-slave switching technology allows you to connect immediately after powering on. You can use the left and right ears at will, seamless switching, simple and casual, and truly free.
2. Open the cover and turn on the phone, it will pair automatically, put the earphones into the charging compartment and close the cover to automatically shut down. Supports music playback/pause, switching between previous and next songs, summoning Sir operation.

Specification:
1. Bluetooth 5.4; Chip: Jieli AC7003
2. Battery capacity: 320mAh for charging case, 40mAh for earphones;
3. Usage time: 7 hours
4. Dimensions: 60x51x27mm; Total weight: 34g
5. Supports master-slave switching, up and down song switching, calling Siri, etc.