1. BT version: v5.4. Chip: AC6973.
2. Supported protocols: Headset, Hands-free, A2DP, AVRCP.
3. Transmission distance: 10m.
4. Transmission frequency: 2402-2480MHz.
5. Speaker unit: 13mm.
6. Impedance: 32Ω ± 15%.
7. Frequency response: 20-20000Hz.
8. Sensitivity: 98dB ± 3dB.
9. Battery capacity: charging case 500mAh, 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). Total working time: 42 hours.
13. Colorful touch control display shows power level of earbuds and charging case, working time, etc. Screen wallpaper, earbuds search, date/time settings, remote camera function (iP only), flashlight, music control, volume control, EQ, alarm, timer, screen brightness adjustment, current L/R earbuds and charging case battery levels, language settings (16 languages: chinese, english, traditional chinese, japanese, russian, german, korean, french, turkish, arabic, portuguese, spanish, vietnamese, thai, malay, italian).
14. Headset automatically turns on when the charging case cover is opened, automatic pairing. Headset automatically turns off when the charging case cover is closed with headset inside.
15. Battery display: supports for iP phones and some Android phones.
16. Sizes: 54 × 52 × 25.5mm.
17. Total weight: 44g. Single earbud weight: 4.2g.