Realme Buds Air 3S uses Bluetooth 5.3 while Zebronics Zeb-Duke 1 supports Bluetooth 5.0+EDR, which can impact connectivity stability and efficiency. 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. There is a noticeable difference in weight (57 Gm vs 205 Gm), which may affect comfort during extended use. Realme Buds Air 3S and Zebronics Zeb-Duke 1 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. Battery life varies between the two (30 Hours vs 34 Hours), which affects how long you can use them on a single charge. If you're comparing Realme Buds Air 3S and Zebronics Zeb-Duke 1, both models offer a strong combination of sound performance, comfort, and modern wireless features. Impedance levels vary (NA vs 32 ohm), which can affect compatibility and audio output when used with different devices. From a usability standpoint, both models provide a reliable and premium headphone experience.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.