Model name: HAMA 184111

Specification :

• Music time: up to 25 hours with fully charged headphones
• Talk time: up to 23 hours with fully charged headphones
• Volume control: directly on the headphones
• Audio playback: via Bluetooth
• Control functions:
  • Play/pause music
  • Answer/reject/end calls
  • Redial the last number
• Voice information: e.g. battery charge notification
• Bluetooth class: 2
• Bluetooth version: 5.1
• Operating frequency: 2402-2480MHz
• Frequency band (headphones): 20 Hz - 20 kHz
• Frequency band (microphone): 100 Hz - 10 kHz
• Impedance (headphones): 32 Ω
• Impedance (microphone): 2 kΩ
• Range: 10 m
• Sensitivity (headphones): 85 dB +/- 3 dB
• Sensitivity (microphone): -38 dB ± 3 dB