A4Tech B20 True Wireless Earphone (Mint Green)
- Brand: A4Tech
- Model: B20
- Color: Mint Green
- Speaker Size: 13 mm
- Frequency Response: 20 Hz-20 kHz
- Earphone Sensitivity: 102 dB @ -10 dBFS
- Mic. Sensitivity: -42 dB @1 kHz/Pa
- Earphone Impedance: 32 ohm
- Bluetooth Version: v5.2
- Operation Distance: 10 m
- Earphone Battery Type: Lithium Battery (40 mAh)
- Charging Case Battery Type: Lithium Battery (380 mAh)
- Charging Power: 5V=500mA
- Earphone Charging Time: ＜1.5H (Low Battery to Fully Charged)
- Case Charging Time: ＜1.5H (Low Battery to Fully Charged)
- Music Playtime with Single Charge: ≈5H (50% Volume Data)
- Playtime from Charging Case: ≈20H (50% Volume Data)
- Earphones weight: 4g
- Weight: 39g
- Warranty: 1 Year
