Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. boAt Airdopes 291 and boAt Airdopes 621 offer different noise cancellation capabilities (CVC vs NA), which can impact how effectively they block external noise. There is a noticeable difference in weight (8 gm vs 129 Gm), which may affect comfort during extended use. Impedance levels vary (22 ohm vs 16 ohm), which can affect compatibility and audio output when used with different devices. Both models provide a wide frequency range, delivering a balanced audio experience across different types of content. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Battery life varies between the two (3.5 Hours vs 5 / 7 / 150 Hours), which affects how long you can use them on a single charge. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. If you're comparing boAt Airdopes 291 and boAt Airdopes 621, both models offer a strong combination of sound performance, comfort, and modern wireless features.

Verdict: Choosing between boAt Airdopes 291 and boAt Airdopes 621 depends on whether you value better sound, longer battery life, or enhanced features.