There is a noticeable difference in weight (30 gm vs 118 Gm), which may affect comfort during extended use. The driver size differs between the two (12 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. Battery life varies between the two (9 Hours vs 8 Hours), which affects how long you can use them on a single charge. Impedance levels vary (NA vs 32 ohm), which can affect compatibility and audio output when used with different devices. boAt Rockerz 315 SVA and boAt Rockerz 400 PK Edition are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. boAt Rockerz 315 SVA and boAt Rockerz 400 PK Edition offer different noise cancellation capabilities (NA vs Passive), which can impact how effectively they block external noise. boAt Rockerz 315 SVA uses Bluetooth 5.0 +EDR while boAt Rockerz 400 PK Edition supports Bluetooth 4.1, which can impact connectivity stability and efficiency. Both models provide a wide frequency range, delivering a balanced audio experience across different types of content.

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