Key Differences

boAt Rockerz 400 uses Bluetooth 4.1 while boAt Immortal 121 supports Bluetooth 5.3, which can impact connectivity stability and efficiency. The driver size differs between the two (40 mm vs 10 mm), which can influence sound depth, bass response, and overall audio clarity. Both models provide a wide frequency range, delivering a balanced audio experience across different types of content. 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 (118 gm vs 45 Gm), which may affect comfort during extended use. From a usability standpoint, both models provide a reliable and premium headphone experience. boAt Rockerz 400 and boAt Immortal 121 offer different noise cancellation capabilities (CVC vs NA), which can impact how effectively they block external noise. boAt Rockerz 400 and boAt Immortal 121 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. Battery life varies between the two (8 Hours vs 10 / 40 Hours), which affects how long you can use them on a single charge.

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