User rating
Pros: The Sony MDRRF985RK wireless headphone has reasonable price. It is a lightweight unit that offers a great comfort. This headphone has great performance as compared to its very affordable price. It is also easy to recharge it fast.
Cons: The instructions are written poorly and some people claimed that there is no access to the battery compartment of this headphone system.

Sony MDRRF985RK Wireless RF Headphone, BlackThe Sony MDRRF985RK wireless RF (Radio Frequency) is a headphone that is able to wirelessly transmit the analog audio sources along with an operational range of up to 150 feet. Therefore, it is easy for everyone to listen and enjoy their favorite music and TV program due to free to move ability of this headphone.

Product Description

The Sony MDRRF985RK wireless RF headphone features a built-in rechargeable battery which is able to provide a run time of up to 25 hours. The automatic tuning feature ensures the user about optimal signal reception. This headphone device is best for those who interested in listening to their favorite songs on the FM instead on personal playlist. It supports wireless FM which is like a gift for such people. It comes in attractive black color and has a sleek design.

The wireless range makes the users to move around and beneficial for those who basically cannot stick to a single place. It takes approximately 3.5 hours to get fully charged and has a rechargeable battery that has a playback up to 25 hours. This playback time makes this device to work for a whole day.

These wireless headphones are the best wireless headphone in terms of their comfortable cushioned layer over the ear, adjustable headbands, three selectable channels on the radio together with 900 MHz radio frequency, easy to carry around feature, high sound quality, affordability, exceptionally lightweight feature, rechargeable battery, 40 mm drivers and much more. When it comes to audio clarity, it also works efficiently as it has a noise reduction system that is helpful in producing clear sound by minimizing transmission noise.

Technical Specifications

  • Driver Unit : 40 mm
  • Volume Control : Yes (Rotary)
  • Audio Modes : Mute: Operates when RF signal is weak or not received
  • Effective Range : Approximately 150 feet (45 m)
  • Transmitter : Ch1: 915.5 MHz, Ch2: 916.0 MHz, Ch3: 916.5 MHz (selective, FM Stereo)
  • Frequency Response : 10-22000 Hz
  • Channel Selection : Select by a slide switch
  • Type of Use : Home
  • Design : Over-the-head, Home-music/movie/games
  • Power On/Off : Power turns ON when headphones are worn; Red LED illuminates
  • Headband : Wide, Easy-Adjust
  • Magnet : Ferrite
  • Headphone Type : Closed, Dynamic
  • Communication : Wireless Analog 900 mHz Radio Frequency
  • Audio In : Analog Phono Input (left/right), Analog Stereo Input mini jack (x1)
  • Power Requirements : DC 12 V (from supplied AC Adaptor)
  • Battery Type : Rechargeable Lithium-Ion rechargeable battery
  • Battery Life (Approx) : 25 H (with fully charged supplied Li-Ion battery pack)
  • Battery Charging (Approx) : 3.5 H (to fully charge an empty battery); Battery is charged by placing MDR on TMR
  • Output Power : 5 mW + 5 mW
  • Internal Power Supply : Transmitter: Supplied AC adapter (12 V, 200 mA)
  • Tuning : Manual tuning via switch on both base and headphones
  • Cord Length (Approx.) : Cord Length (Approx.): 39 3/8 in. (1.0 m) Stereo connecting cable
  • Dimensions (Approx.) : Transmitter: 8 5/8 x 4 1/4 x 3 7/8 in. (216 x 105 x 96 mm)
  • Weight (Approx.) : Headphones: Approximately 10.59 oz. (300 grams) Including supplied battery, Transmitter: Approximately 7.7 oz. (220 grams)

Key Features:

  • The adjustable headband and foam cushioned over the ear design of this headphone make extended listening sessions more comfortable.
  • Its 40 mm drivers help in delivering powerful and expressive audio.
  • The automatic tuning feature guarantees optimal signal reception.
  • The wireless range of up to 150 feet allows the user to enjoy listening by moving around and not to stay at just same location.
  • It has a faithful frequency response, rechargeable built-in lithium-ion battery and noise reduction system.

Customer Reviews

I can confirm that most of the people love to have such perfect wireless headphones. Some of them prefer this device due to avoid the difficulty of hearing the TV clearly. Some people prefer it to make their TV watching or radio listening experience a noise free. Some claimed about the battery compartment accessing problem.


Overall, it is a decent purchase due to its very affordable price and best quality features. I would highly recommend this wireless headphone system to those who seek entertainment at all times without any interruption and want to listen their favorite songs on the FM.