Sennheiser Accentum Open True Wireless Earbuds vs OnePlus Buds 4
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General
| Brand | Sennheiser | OnePlus |
| Model | Accentum Open | Buds 4 |
| Country of Origin | China | China |
| Design | TWS Earbuds | TWS Earbuds |
| Type | Open Ear | In the Ear |
| Connectivity | Wireless | Wireless |
Design and Body
| Dimensions | 52.4 x 65.4 x 25.3 mm | |
| Weight | 38 g (With Case), 4.4 g Per Earbud | 49.02 g (With Case), 4.73 g Per Earbud |
Features
| Bluetooth | Yes, 5.3 | Yes, 5.4 |
| Bluetooth Range | 10 m | |
| USB | Yes | Yes |
| Microphone | Yes, Dual-Beamforming Microphones | Yes, 3 Mics Per Side |
| Voice Assistant | Yes | |
| Water Resistant | Yes | Yes |
| Monaural | Yes | Yes |
| Controls | Touch Controls | Touch |
| Music Controls | Volume +/-, Play/Pause, Previous/Next Track | |
| Call Controls | Answer/Hang Up/Reject calls | |
| Switch between Call and Music | Yes | |
| Additional Features | IPX4 Rated, Open Design, USB-C Charging Case, Multipoint Connectivity | IP55 Dust and Water Resistance, OnePlus 3D Audio, Sound Master EQ, Golden Sound, 47ms Low Latency, AI Translation, Voice Assistant Shortcut, Find My Earbuds, Double-Tap for Camera Control, Compatibility with the HeyMelody App, OTA Updates, Dual-Device Connection, Google Fast Pair, Transparency Mode |
Sound Features
| Deep Bass | Yes | |
| Impedance | 18 ohm | |
| Sensitivity | 109 dB | 118±1.3dB @1mW |
| Frequency Response | 15 Hz (Min) - 40 kHz (Max) | |
| Driver Unit | 11 mm | |
| Driver Type | Dynamic | 11mm Woofer Plus 6mm Tweeter |
| Noise Reduction | TUV High Performance Noise Cancellation, 800 Times Per Second Real-Time Adjustment, 200% Voice Cancelling Improvement When Compared with OnePlus Buds 3, Up to 5,500 Hz Noise Cancellation Range, 3-mic AI Call Noise Cancellation | |
| Active Noise Cancellation | Yes, Up to 55dB Real-Time Adaptive ANC | |
| Other Features | Dynamic Sound | Oneplus 3D Spatial Audio, Golden Sound, Sound Master EQ |
Extra
| Sales Package | Earbuds, Charging Case, USB-C Charging Cable, Quick Start Guide | OnePlus Buds 4 x 1 Pair, OnePlus Buds 4 Charging Case x 1, Type-C Charging Cable x 1, Ear Tips (S, M, L Pairs; M Pre-installed), User Manual And Safety and Warranty x 1 |
| Other | Earbuds Dimension (31 x 20.6 x 24.2) mm, -38±1dB Microphone Sensitivity, 101dB Sound Pressure, 10mW Rated Power, LHDC 5.0 / AAC / SBC Bluetooth Codec, HFP/A2DP/AVRCP Bluetooth Transmission Protocol |
Power Features
| Battery Capacity | 530 mAh (Case), 62 mAh Per Earbud | |
| Battery | Lithium Ion, 10 Minutes of Charging = 1.5 Hours of Playtime | 10 Mins Charge = 11 Hours of Playtime |
| Wireless Charging | No | |
| Battery Life | 28 hours (With Case) 6.5 hours (Earbuds) | 45 hours with Case (ANC Off) 11 hours (Earbuds with ANC Off) 24 hours with Case (ANC On) 6 hours (Earbuds with ANC On) |
| Charging Time | 1.33 hours (Case), 50 min (Earbuds) |
Warranty
| Warranty | 3 years | 1 year, Manufacturer Warranty |
| Warranty Type | Manufacturer | Manufacturer |
| Covered in Warranty | Manufacturing Defect | |
| Not Covered in Warranty | Physical Damage |
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