In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (Power ON 220 Ω, OFF 45 Ω vs 32 Ohms), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (150 g vs NA), which may affect comfort during extended use. The driver size differs between the two (30 mm vs NA), which can influence sound depth, bass response, and overall audio clarity. Sony MDR-ZX110NC and Koss UR20 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Sony MDR-ZX110NC and Koss UR20 offer different noise cancellation capabilities (Yes vs NA), which can impact how effectively they block external noise. The frequency response differs (10Hz - 22,000Hz vs 30 Hz to 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel.

Verdict: Choosing between Sony MDR-ZX110NC and Koss UR20 depends on whether you value better sound, longer battery life, or enhanced features.