SONY Wireless Stereo Surround Headphone MDR-RF7100 (Japan Import) | additional headphones for MDR-DS7100 system
HEADPHONES Type: Closed Dynamic | Drivers: 50mm CCAW Voice Coil | Frequency: 6-25,000Hz | Power: Built-in lithium ion battery | Battery Duration: approx. 13hours (fully charged), 4hours (30min. Charge) | Weight: 325g