Oppo ENCO Free vs Sennheiser CX 150BT – Which One Should You Buy? (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.

2-year warranty. 10-hours of battery life. Superior audio with AAC and SBC codec support. Effortless multi-connection pairing for two devices. Call and music management via three-button remote. Advanced wireless Bluetooth 5.0 technology with seamless connectivity. Designed for comfort with four interchangeable ear tip sizes included for optimal fit and sound isolation.

Key Differences

There is a noticeable difference in weight (48.2 gm vs 13 gm), which may affect comfort during extended use. Oppo ENCO Free and Sennheiser CX 150BT offer different noise cancellation capabilities (AI Uplink vs NA), which can impact how effectively they block external noise. If you're comparing Oppo ENCO Free and Sennheiser CX 150BT, both models offer a strong combination of sound performance, comfort, and modern wireless features. Battery life varies between the two (25 Hours vs 10 Hours), which affects how long you can use them on a single charge. The frequency response differs (16 Hz ~ 20000 kHz vs 17 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (13.5 mm vs 9.7 mm), which can influence sound depth, bass response, and overall audio clarity. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Impedance levels vary (NA vs 28 ohm), which can affect compatibility and audio output when used with different devices.

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: 25 Hours vs 10 Hours
Noise Cancelling: AI Uplink vs NA
Driver Size: 13.5 mm vs 9.7 mm
Weight: 48.2 gm vs 13 gm
Impedance: NA vs 28 ohm

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Key Differences

Top Differences