Oppo a15s

• Model:  ETI41
• Charging Case Model: ETI42
• Driver: 8 mm dynamic driver
• Driver sensitivity: 99 dB @ 1kHz
• Frequency response range: 20 Hz- 20 kHz
• Microphone sensitivity: -38 dBV/Pa
• Bluetooth® version: 5.0
• Bluetooth range: 10 m
• Battery type: Rechargeable Lithium-ion battery
• Battery capacity: 40 mAh (Headset), 400 mAh (Charging Case)

Music playtime (50% volume):  5 h (single charge), 20 h (with charging case)

• Charging time:  120 min(Headset), 120 min (Headset+Charging Case)
• Dust & Water Resistance (Headset): IP55
• Weight (approx.)
  • 4.4g/Headset
  • 35.5g/Charging
  • Case, 44.3g/Headphones
• Charging Port: USB Type-C