Oppo ENCO Free vs Sony WI-XB400 – Detailed Specs Comparison (2026)

12 Month Manufacturer Warranty. It delivers professional audio quality. Intuitive controls, right at your fingertips. Enco Free equipped with IPX4 water resistance which protects against everyday splashes and spills. Enjoy up to 25 hours of music playback or 15 hours of call time when you carry your headphones with their charging case. AI uplink noise cancellation during calls: Industry leading AI uplink noise cancellation and dual microphone beam-forming technology, calls sound clear even in noisy environment.

EXTRA BASSâ„¢ for deep, punchy sound BluetoothÂ® wireless technology for unrestricted movement Up to 15 hours of battery life and quick charging Easy hands-free calling and voice assistant commands with microphone Listen in comfort, anywhere, anytime Enjoy up to 15 hours of non-stop music Power up with quick charging Comfortable neckband style with magnetic buds for easy carrying

Key Differences

Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sony WI-XB400 and Oppo ENCO Free are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. The driver size differs between the two (12 mm vs 13.5 mm), which can influence sound depth, bass response, and overall audio clarity. Sony WI-XB400 and Oppo ENCO Free offer different noise cancellation capabilities (NA vs AI Uplink), which can impact how effectively they block external noise. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Battery life varies between the two (15 Hours vs 25 Hours), which affects how long you can use them on a single charge. There is a noticeable difference in weight (21 gm vs 48.2 gm), which may affect comfort during extended use. The frequency response differs (20 Hz - 20000 Hz vs 16 Hz ~ 20000 kHz), which can influence how well the headphones reproduce lows, mids, and highs.

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

Top Differences

Battery Life: 15 Hours vs 25 Hours
Noise Cancelling: NA vs AI Uplink
Driver Size: 12 mm vs 13.5 mm
Weight: 21 gm vs 48.2 gm

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Key Differences

Top Differences