Binaural Low-Latency Bluetooth® Transmission for Lag-Free Transmission
In-Depth Noise Reduction for an Immersive Experience
Triple Microphone Noise Reduction for Clear and Carefree Calls
New Quality Compensation for Professional Audio Performance
|Product colors||Floral White / Starry Blue / Aqua Blue|
|Model (charging case)||ETI22|
|Driver||7mm dynamic driver|
|Driver sensitivity||103dB @1KHz|
|Frequency response range||20Hz ~ 20kHz|
|Microphone sensitivity||-38 dBV/Pa|
|Bluetooth version||BT 5.0|
|Wireless range||10 m|
|Battery type||Rechargeable lithium-ion battery|
|Battery capacity||25 mAh (headphones) /
480 mAh (charging case)
|Music play time (50% volume)||ANC on: 3.5h (single charge) / 20h (with charging case)
ANC off：4h (single charge) / 24h (with charging case)
|Wired Charging time||80min (with charging case)|
|Wireless charging time||2.5h (with charging case)|
|Charging port||USB Type-C|
|Dust and water resistance (headphones)||IP54|
|Weight (Entire device)||55.5g|
- 1.Noise reduction functionality has a more significant effect in the low frequency range, such as in airplanes or trains, but is not as effective for higher frequencies, such as with nearby human voices.
- 2.The noise reduction depth data was measured in OPPO's controlled environment with ANC mode on.
- 3.Qi is the wireless charging standard launched by the Wireless Charging Alliance, which aims to solve the compatibility of wireless charging for different mobile devices. Any chargers that support the Qi standard can charge W51.
- 4.Binaural low-latency Bluetooth transmission is compatible with both Qualcomm and MTK mobile platforms.
- 5.Charging and battery life test data was measured in OPPO's controlled environment with a room temperature of 25℃ and using a standard OPPO charger. Actual charging and battery life will vary with different usage environments and chargers.
- 6.Only the earphones are certified for IP54 dust and water proofing and not the earphone box. It is recommended to avoid using the earphones during extreme sports to prevent damage from sweat penetration.
- 7.Quick pairing is supported by OPPO phones using ColorOS 7.0 and above, excluding the A series, F series, Reno 2Z, Reno2 F, R15, Reno3 4G version, and Reno3 Pro 4G version, Reno4 4G version, and Reno4 Pro 4G version. Some models will support quick pairing when new versions are released.
- 8.The voice assistant summoning function is supported by OPPO phones using ColorOS 6.0 and above. Summoning other intelligent voice assistants is also supported. Please consult your relevant mobile phone manufacturer or local distributor for specific details.
- 9.The above product materials, product data, and other information is for reference only. Some product specifications and descriptions may change due to the replacement of suppliers or other various reasons.