Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sony MDR-EX255AP and Sennheiser CX 80S are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Impedance levels vary (16 ohm vs 28 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (5 Hz - 25,000 Hz vs 17 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. From a usability standpoint, both models provide a reliable and premium headphone experience. The driver size differs between the two (12 mm vs NA), which can influence sound depth, bass response, and overall audio clarity. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Sony MDR-EX255AP and Sennheiser CX 80S offer different noise cancellation capabilities (NA vs AMBIENT), which can impact how effectively they block external noise. There is a noticeable difference in weight (3 gm vs 10 Gm), which may affect comfort during extended use.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.