If you're comparing Sennheiser RS 180 and Sony NWZ WH505-B, both models offer a strong combination of sound performance, comfort, and modern wireless features. There is a noticeable difference in weight (204 g (without battery) vs 313 g), which may affect comfort during extended use. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The driver size differs between the two (NA vs 40 mm), 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. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. The frequency response differs (18 - 21000 Hz vs 5 - 25,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (32 ohms vs 40 ohm), which can affect compatibility and audio output when used with different devices. Sennheiser RS 180 and Sony NWZ WH505-B offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise.

Verdict: Choosing between Sennheiser RS 180 and Sony NWZ WH505-B depends on whether you value better sound, longer battery life, or enhanced features.