The driver size differs between the two (9 mm vs 10 mm), which can influence sound depth, bass response, and overall audio clarity. Impedance levels vary (12 vs 16 ohm), which can affect compatibility and audio output when used with different devices. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. The frequency response differs (15 - 22 000 Hz vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. 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. There is a noticeable difference in weight (8g vs 16 Gm), which may affect comfort during extended use. SoundMAGIC PL21 and Zebronics Zeb-Buds C offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. SoundMAGIC PL21 and Zebronics Zeb-Buds C are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.