OPPO Enco W51 Product Parameters
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1. Basic Information | |
| Model | ETI21 |
| Charging Case model | ETI22 |
| Weight | 7.9g/（Earbuds） 47.6g/(Charging Case) 55.5g/(Entire device) |
| Color | Floral White/Starry Black/Aqua Blue |
| Charging box size | 56.27mm*56.42mm*24.40mm |
2. Driver & Speaker & Microphone | |
| Driver | 7mm dynamic driver |
| Speaker diaphragm material | Dual TPU graphene composite diaphragm speaker |
| Speaker sensitivity | 103 dB @ 1kHz |
| Frequency response range | 20 Hz- 20 kHz |
| Speaker rated impedance | 32 Ohm |
| Rated power | 3 mW |
| Microphone type | Omnidirectional MEMS microphone |
| Microphone sensitivity | -38 dBV/Pa |
3. Bluetooth | |
| Bluetooth codec | AAC/SBC |
| Bluetooth version | 5 |
| Bluetooth range | 10 m |
4. Battery | |
| Battery type | Rechargeable Lithium-ion battery |
| Battery capacity | 25 mAh (Earbuds) 480 mAh (Charging case) |
5. Endurance | |
| Music play time (50% volume) | ANC on:3.5 h(single charge)/ 20h(with charging case) ANC off:4h (single charge)/24h(with charging case) |
| Communication time | ANC on:2.5 h(single charge)/15h(with charging case) ANC off:2.5h (single charge)/16h(with charging case) |
| Continuous standby time | ANC off:Earbuds 25 h,Earbuds +Charging case 150h ANC on:Earbuds 5 h,Earbuds +Charging case 30h |
6. Charging | |
| Wired Charging time | 80 min(Earbuds)/80 min(Earbuds+Charging case) |
| Wireless charging time | 150 min(Earbuds)/150 min( Earbuds +Charging Case) |
| Input (Charging Case) | 5V----2A |
| Output(Charging Case) | 5V----0.15A |
| Charging Port | USB Type-C |
7. Others | |
| Water resistance level | IP54 |
| Operating temperature range | 2~35 degrees Celsius |
| Storage temperature range | -10~50 degrees Celsius |
| Charging temperature range | 0~45 degrees Celsius |