Sony MDR-RF811RK

Rechargeable wireless headphones with 100m listening range

40mm driver: Hi-Fi quality digital sound for home, with powerful 40mm Neodymium driver unit and long stroke diaphragm for deep clear bass.
RF wireless: Radio Frequency transmission technology offering a huge 100m listening range.
Cordless style: Closed type headphones with wireless connectivity and built-in volume control for the ultimate freedom to listen around the house.
Easy set up: Tune and go: Automatic tuning and on/off switch, plus comes with all the cables you need to plug into your TV.
Simple connectivity: Stereo mini plug easily connects your headphones to TV and audio devices around the home.
Lightweight and long-lasting comfort: Weighing just 270g and designed for long-lasting wearing comfort with parallel-link self-adjusting headband plus padded circum-aural ear cushions.

Performance
Product type:	Headphones
Wearing style:	Head-band
Recommended usage:	Music
Product colour:	Black
Volume control:	Rotary
Ports & interfaces
Connectivity technology:	Wireless
Wireless range:	100 m
Headphones
Ear coupling:	Circumaural
Acoustic system:	Closed
Headphone frequency:	20 - 20000 Hz
Magnet type:	Neodymium
Driver unit:	4 cm
Microphone
Microphone type:	Not available
Battery
Battery type:	BP-HP550-11
Battery technology:	Nickel-Metal Hydride (NiMH)
Continuous audio playback time:	13 h
Rechargeable battery:
Battery charge indicator:
Battery recharge time:	16 h
Charging source:	AC
Operational conditions
Operating temperature (T-T):	0 - 40 °C
Operating relative humidity (H-H):	40 - 60%
Weight & dimensions
Weight:	270 g
Packaging content
AC adapter included:
Wireless receiver interface:	3.5 mm
Quantity:	1
Logistics data
Harmonized System (HS) code:	85183000
Other features
Receiver dimensions (WxDxH):	108 x 108 x 128 mm
Receiver weight:	137 g
Modulation:	FM

Product Safety Information
Responsible Person in the EU:
Sony Europe B.V., Zweigniederlassung Deutschland Kemperplatz 1 10785 Berlin Deutschland https://services.sony.de/supportmvc/de/contact/