Battery life varies between the two (40 Hours vs 3.5 / 14 Hours), which affects how long you can use them on a single charge. The driver size differs between the two (10 mm vs 8 mm), which can influence sound depth, bass response, and overall audio clarity. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Impedance levels vary (32 ohm vs 16 ohm), which can affect compatibility and audio output when used with different devices. If you're comparing boAt Rockerz 255 PRO PLUS and boAt Airdopes 121 v2, both models offer a strong combination of sound performance, comfort, and modern wireless features. boAt Rockerz 255 PRO PLUS and boAt Airdopes 121 v2 offer different noise cancellation capabilities (CVC vs NA), which can impact how effectively they block external noise. boAt Rockerz 255 PRO PLUS uses Bluetooth 5.2 while boAt Airdopes 121 v2 supports Bluetooth 5.0+EDR, which can impact connectivity stability and efficiency. The frequency response differs (20 Hz - 20000 Hz vs 24 Hz - 24000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. There is a noticeable difference in weight (32 Gm vs 36 Gm), 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.