Sennheiser CX 150BT vs Oppo ENCO Free – Which One Should You Buy? (2026)

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.

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.

Key Differences

There is a noticeable difference in weight (48.2 gm vs 13 gm), which may affect comfort during extended use. From a usability standpoint, both models provide a reliable and premium headphone experience. 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. Battery life varies between the two (25 Hours vs 10 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. 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. Oppo ENCO Free and Sennheiser CX 150BT are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Impedance levels vary (NA vs 28 ohm), which can affect compatibility and audio output when used with different devices.

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

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

Compare Sennheiser CX 150BT with:

Compare Oppo ENCO Free with:

Key Differences

Top Differences