OPPO Enco W31 is a truly wireless headphone designed to deliver clear and seamless listening experience, yet affordable.
| Model: | ETI11 |
| Charging case model: | ETI12 |
| Driver: | 7mm dynamic driver |
| Driver sensitivity: | 95dB @ 1kHZ |
| Speaker Impedance: | 32Ω |
| Frequency response range: | 20Hz - 20KHz |
| Microphone sensitivity: | -38dBV / Pa |
| Bluetooth version: | 5.0 |
| Audio formats: | ACC / SBC |
| Wireless range: | 10m |
| Battery type: | Rechargeable Lithium-ion battery |
| Batter capacity: | 25mAh (Earphone) / 350mAh (Case) |
| Music play time: | 3.5h (single charge) / 15h (with Case) |
| Call duration: | 2.5h (single charge) / 12h (with Case) |
| Charging time: | 80min (Earphone) / 150min (Case) |
| Input(Charging Case): | 5V = 1A |
| Dust&Water resistance: | IP54 (Headphone) |
| Color: | White |
| Weight: | 4g (single earphone) / 42g (Case) |
| Giftbox dimension: | 120*120*37mm |
Comes with a 12-month OPPO warranty