Form factor: True wireless earbuds

Earbuds model: ETE21

Colors: White, Gray

Charging case model: ETE22

Sound quality

Dynamic driver: 12.4 mm

Speaker sensitivity: 110.5 ± 3 dB at 1 kHz

Frequency response range: 20 Hz to 20 kHz

Bluetooth codec: AAC/SBC

Noise cancellation

Mode: Noise cancellation/Transparency

Noise cancellation for calls: Dual-mic, AI noise cancellation

Microphone sensitivity: -38 dBV/Pa

Bluetooth

Version: BT 5.2

Range: 10 meters

Battery

Type: Rechargeable lithium-ion battery

Capacity: 43 mAh (earbuds)/440 mAh (charging case)

Music playback time (AAC, default settings, 50% volume)*:

Noise cancellation on: 5 hours (single charge); 20 hours (charging case)

Noise cancellation off: 7 hours (single charge); 28 hours (charging case)

Charging

Charging time*: 90 minutes (earbuds) / 120 minutes (earbuds + charging case)

Charging port: USB Type-C

Charging input (charging case): 5 V⎓1 A

Charging output (charging case): 5 V⎓200 mA

* All these specifications were obtained based on tests performed by OPPO laboratories. The battery capacity, music playback time, and charging time were tested in OPPO laboratories at a temperature of 25℃ using an OPPO standard charger. The actual results may differ slightly depending on environmental factors and the charger used.

Weight & dimensions

Single-earbud weight: 4.3g (± 0.2g)

Charging case weight: 41.8g (± 1g)

Product weight: 50.4g (± 1g)

Charging case dimensions: 66.84 x 51.45 x 25.04 mm

Water and dust resistance