Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sony MDR-ZX110 and JBL C300SI offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. Impedance levels vary (24 ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (30 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (12 - 22,000 Hz vs 20 Hz - 20000 kHz), which can influence how well the headphones reproduce lows, mids, and highs. There is a noticeable difference in weight (120 g vs 209 gm), which may affect comfort during extended use. Sony MDR-ZX110 and JBL C300SI are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience.

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