Sennheiser RS 120-W headphones

Noise reduction: No | Operating time (max): 20 h | Warnings: Do not disassemble or modify the product yourself. | Warnings: The product contains batteries which must be disposed of correctly. | Warnings: Read the user manual before use. | Product colour: Black | Impedance: 24 Ω | Headset type: Binaural | Microphone type: Not available | Volume control: Yes | Weight: 215 g | Charging time: 5 h | Sensitivity: 100 dB | Shooting distance: 60 m | Driver type: Dynamic | Product type: Headphones | Connectivity technology: Wireless | Recommended usage: Music | Wearing style: Head-band | 3.5 mm connector: Yes | Bluetooth: Yes | Acoustic system: Open | Headphone frequency: 22 - 19500 Hz