EQ21 Sandy, TWS headset, ANC and ENC noise reduction, BT v5.4, charging case battery 400mAh, headset battery 40mAh, 35 hours of use, colorful touch control display

1. BT version: v5.4. Chip: AC7003.
2. Supported protocols: Headset, Hands-free, A2DP, AVRCP.
3. Transmission distance: 10m.
4. Transmission frequency: 2402-2480MHz.
5. Speaker unit: 10mm.
6. Impedance: 32Ω ± 15%.
7. Frequency response: 20-20000Hz.
8. Sensitivity: 98dB ± 3dB.
9. Battery capacity: charging case 400mAh, headset 40mAh.
10. Charging case input: DC5V, Type-C.
11. Charging time: about 1.5 hours for charging case, about 1 hour for headset.
12. Talk / music time: 7 hours (80% volume, ANC off), 6 hours (80% volume, ANC on). Total working time: 35 hours (ANC off).
13. ANC with transparency mode and ENC 4 microphones noise reduction.
14. Colorful touch control display shows power level of earbuds and charging case, time, etc. Variety of function settings can be directly operated by the charging case (wallpaper, headset search, time setting, camera function (only for iP phones), flashlight, music control, volume adjustment, noise reduction modes switching, sound mode setting, alarm, screen brightness adjustment).
Supports 16 languages: chinese, traditional chinese, english, japanese, russian, german, korean, french, turkish, arabic, portuguese, spanish, vietnamese, thai, malay, italian.
15. Open the charging case and take out headsets to turn it on and pair automatically. Headset automatically turns off when put in the charging case and cover is closed.
16. Sizes: 60.6 × 45.2 × 21.7mm.
17. Total weight: 57.6g. Single earbud weight: 3.7g.