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Headphones

Compare Sony DR-BT20NX vs. Sony MDR-RF840RK

This is a side-by-side comparison of the specs of the DR-BT20NX vs. the MDR-RF840RK. Differences are highlighted in yellow.
Item DR-BT20NX MDR-RF840RK
Item image Item image
Impedence 28Ω [x]
Bluetooth version 2 [x]
Magnet Neodymium [x] Ferrite [x]
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