Sennheiser RS 120 II Wireless Stereo Headphones

Sennheiser RS 120 II Wireless Stereo Headphones - Open, On-Ear Design - Frequency Range: 22 Hz to 19.5 kHz - Impedance: 24 Ohms - Sound Pressure Level: 106dB - Transducer Type: Open, Dynamic - Ear Coupling: Supraaural - Connectivity: FM Stereo - Wireless Range: Up to 100m - Battery Life: Up to 20 Hours - Includes: 6.3mm Adapter, 2x Rechargeable NiMH AAA Batteries - Wall-mountable Transmitter - 508680 - 2 Years Limited Warranty