There is a noticeable difference in weight (230 g vs 185.8 gm), which may affect comfort during extended use. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (24 ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (22 - 19500 Hz vs 20 Hz - 20000 kHz), which can influence how well the headphones reproduce lows, mids, and highs. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Sennheiser RS-120 and JBL LIVE 400 BT offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. Sennheiser RS-120 and JBL LIVE 400 BT are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Battery life varies between the two (20 - 25 hrs vs 24 Hours), which affects how long you can use them on a single charge. The driver size differs between the two (NA vs 40 mm), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Choosing between Sennheiser RS-120 and JBL LIVE 400 BT depends on whether you value better sound, longer battery life, or enhanced features.