Key Differences

Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The frequency response differs (17 - 23,000 Hz vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Sennheiser CX 275s and Urbanears Sumpan offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Impedance levels vary (16 ohms vs 32 Ohms), which can affect compatibility and audio output when used with different devices. Sennheiser CX 275s and Urbanears Sumpan are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. The driver size differs between the two (NA vs 13.6 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (15g vs NA), 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.