Additional Headphone for the RS 175    
HDR 175    
    
    
    
Frequency Response    17 - 22,000 Hz
Max Sound pressure level    114dB at 1kHz, 3%THD
THD. Total harmonic distortion    <0.5% at 1kHz, 100dB SPL
Transducer principle    Dynamic, closed
Weight    310g (battery included)
Operating time    Max 18hr
    
    
    
1 Bass Button    
2. Virtual Surround Sound button    
3. Volume - button    
4. Volume + button    
    
    
    
Battery insert or replacement    
    
    
    
Rechargeable 2 AAA NiMH battery included