USAMS BU12 TWS Half In-Ear Bluetooth 5.1 Wireless Earphones(Green)

1. Upgraded BT 5.1, fast and stable connection.2. Dual-channel stereo, immersive HiFi sound quality.3. Built-in microphone, sensitive touch control.4. Transparent shell, unique macaron color.
Parameter:1. Material: ABS+PC2. BT version: 5.13. Connection range: <=12 meters4. Speaker diameter: 13mm5. Speaker sensitivity: 115 +/- 3dB6. Speaker Impedance: 32ohm7. Speaker frequency response: 20Hz~20KHz8. SNR: >709. Earbud weight: about 3g x210. Earbud battery capacity: 30mAh11. Playing time: about 5 hours12. Calling time: about 4 hours13. Earbud charging time: about 1 hour14. Charging case weight: about 35.5g15. Charging case battery capacity: 300mAh16. Charging time for the case: about 1 hour17. Charging case Input: 5V18. Standby time: about 25 hours19. Charging case size: 56*50*26.7mm20. Compatibility: for iOS/Android devices with BT function21. Including: Earbud x1 pair, Charging case x1, Type-C charging cable x1, User manual x1