Sony MDR-S40 Wired Headphones vs Sony MDR RF985RK Wireless Headphones

  • Sony MDR-S40 Wired Headphones were first released on 16th August 2014. The elegant white design with a weight of 85.00g makes the Sony MDR-S40 Wired Headphones a beautiful and comfortable pair of headphones. This version of Sony MDR-S40 Wired Headphones has a 30 driver size, 24 Ohms impedance, 101 dB sensitivity, and a frequency response of 12Hz-23,000Hz, delivering a clearer and sharper acoustic experience. Sony MDR-S40 Wired Headphones is also foldable so you can put it conveniently in your bag.
  • Sony MDR RF985RK Wireless Headphones were first released on 24th December 2013. The elegant black design with a weight of 299.37g makes the Sony MDR RF985RK Wireless Headphones a beautiful and comfortable pair of headphones. Its battery life is 20hrs, helping you comfortably use it throughout a long active day. Sony MDR RF985RK Wireless Headphones is also foldable so you can put it conveniently in your bag.
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Headphone Type
Connectivity
Microphone
No
No
Colour
White
Black
Release date
16th August 2014
24th December 2013
Model Number
MDR-S40
MDR RF985RK
Driver Size (mm)
30
-
Weight (g)
85.00
299.37
Foldable
Yes
Yes
Bluetooth
No
Yes
Battery Life (Hrs)
-
20
Impedance (Ohms)
24
-
Sensitivity (dB)
101
100
Frequency Response Range
12Hz-23,000Hz
-