boAt Rockerz 380 and boAt Immortal 121 offer different noise cancellation capabilities (CVC vs NA), which can impact how effectively they block external noise. Impedance levels vary (32 ohm vs NA), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (105 gm vs 45 Gm), which may affect comfort during extended use. If you're comparing boAt Rockerz 380 and boAt Immortal 121, both models offer a strong combination of sound performance, comfort, and modern wireless features. boAt Rockerz 380 uses Bluetooth 5.0 while boAt Immortal 121 supports Bluetooth 5.3, which can impact connectivity stability and efficiency. Both models provide a wide frequency range, delivering a balanced audio experience across different types of content. Battery life varies between the two (22 Hours vs 10 / 40 Hours), which affects how long you can use them on a single charge. From a usability standpoint, both models provide a reliable and premium headphone experience. The driver size differs between the two (40 mm vs 10 mm), which can influence sound depth, bass response, and overall audio clarity.

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