Sony RF811RK Wireless Headphones
| General Data | Driver unit Microphone Magnet Full Type Frequency Beat control Usage time Impedance Cord type Charge time Plug Weight Color | 40 mm dynamic – Dome type 20–20,000Hz Headband, Over-Ear Power On: 32ohms (Wired);Power Off: 16ohms (Wired) Approx. 16 Hours (Full charge) Stereo mini (on supplied transmitter) 270 g Black |
| Features | Up to 13 hours of battery life Up to 100m wireless range gives you freedom to roam Self-adjusting headband for listening comfort 40mm neodymium drivers for powerful, balanced sound 20–20,000Hz frequency range |