OPPO Enco W31 True Wireless Headphones Specification Parameter List
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1. Basic Information | |
| Name | OPPO Enco W31 True Wireless Headphones |
| Model | ETI11/ETI13 |
| Weight | 4g(Single earphone) 42g(Charging Case) |
2. Driver & Microphone | |
| Driver | 7mm dynamic driver |
| Frequency response range | 20Hz-20kHz |
| Microphone sensitivity | -38dBV/Pa |
| Supported audio formats | AAC/SBC |
3. Bluethooth | |
| Bluetooth version | 5.0 |
| Wireless range | 10m |
4. Battery & Endurance | |
| Battery type | Rechargeable Lithium-ion battery |
| Battery capacity | 25mAh(Headphones) 350mAh(Charging Case) |
| Music play time(50% volume) | 3.5h(Single charge) 15h(With Charging Case) |
5. Charging | |
| Charging time | 80min(Headphones) 150min(Charging Case) |
| Charging Case model | ETI12/ETI14 |
| Input(Charging Case) | 5Vā1A |