- - Black Headphones
- - Wireless RF connectivity 3937" (100 m)
- - Circumaural 20 - 20000 Hz
- - AAA Nickel-Metal Hydride (NiMH)
MDR-RF840RK - Wireless headphone system with long battery life and 100m range
- Transmission range up to 100m allowing the freedom to move about at your leisure.
- 40mm driver units for deep bass response.
- Hassle-free recharging by placing the headphones on the dock (headphone charged via electromagnetic induction).
- Automatic On/Off for headphones making your batteries last longer.
- Rechargeable Battery will keep the music going.
- Battery playback time up to 15 hrs with rechargeable batteries or 28 hrs with Sony Alkaline batteries.
- Rotary Volume Control on Headphones.
Sony MDR-RF840RK, Wireless, 20 - 20000 Hz, 10.6 oz (300 g), Headphones, Black
Sony MDR-RF840RK. Product type: Headphones. Connectivity technology: Wireless. Headphone frequency: 20 - 20000 Hz. Wireless range: 3937" (100 m). Weight: 10.6 oz (300 g). Product color: Black