Specifications
• Model: ETI21
• Charging case model: ETI22
• Driver: 7 mm dynamic driver
• Frequency response range: 20 Hz ~ 20 kHz
• Microphone sensitivity: -38 dBV/Pa
• Bluetooth codec: AAC/SBC
• Bluetooth version: 5.0
• Bluetooth range: 10 m
• Battery type: Rechargeable lithium-ion battery
• Battery capacity: 25 mAh (Earbuds) / 480 mAh (Charging Case)
• Playtime (50% volume)*
With noise cancellation on: 3.5 hours (single charge); 20 hours with charging case
With noise cancellation off: 4 hours (single charge); 24 hours with charging case
• Charging time (wired charging)*: 80 minutes (earbuds) / 80 minutes (e charging case)
• Charging input (charging case): 5 V
⎓
2 A
※
All these specifications were obtained based on tests performed by OPPO laboratories. The battery capacity, audio playtime, and charging time
were tested in our OPPO laboratories at a temperature of 25°C using an OPPO standard charger. The actual results may differ slightly based on
environmental factors and the charger used.
※
This guide is provided for reference only. Please refer to your actual device for its final functions and features.
English
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