Sony MDR-RF985RK - General Specifications; Communication Method; Audio Input; Battery Charging Time

1. Actual battery life will vary based on product settings, usage patterns, battery and environmental conditions.
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Features and specications are subject to change without notice. Non-metric weights and measures are approximate and may vary. Updated: December 13, 2012
Tuning
Manual tuning via switch on both base and
headphones
Volume Control Yes (Rotary)
General
Design Over-the-head, Home-music/movie/games
Diaphragm PET
Headband Wide, Easy-Adjust
Magnet Ferrite
Power On/O
Power turns ON when headphones are worn; Red LED
illuminates
Type of Use Home
Hardware
Communication Wireless Analog 900 mHz Radio Frequency
Headphone Type Closed, Dynamic
Inputs and Outputs
Audio In
Analog Phono Input (le/right), Analog Stereo Input mini
jack (x1)
Power
Battery Charging
(Approx)
3.5 H (to fully charge an empty battery); Battery is
charged by placing MDR on TMR
Battery Life
(Approx)
25 H (with fully charged supplied Li-Ion battery pack)
Battery Type Rechargeable Lithium-Ion rechargeable battery
Internal Power
Supply
Transmitter: Supplied AC adapter (12 V, 200 mA)
Output Power 5 mW + 5 mW
Power
Requirements
DC 12 V (from supplied AC Adaptor)
Weights and Measurements
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)