Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Realme Buds Air 3S and Zebronics Zeb-Duke offer different noise cancellation capabilities (AI ENC vs NA), which can impact how effectively they block external noise. The driver size differs between the two (11 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (57 Gm vs 210 Gm), which may affect comfort during extended use. Realme Buds Air 3S uses Bluetooth 5.3 while Zebronics Zeb-Duke supports Bluetooth 5.0, which can impact connectivity stability and efficiency. Realme Buds Air 3S and Zebronics Zeb-Duke are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Impedance levels vary (NA vs 32 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (115 HZ To 20000 KHz vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs.

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