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| ratings | ||||
| Overall NDTV Rating | Read Review | - | ||
| Design / Comfort Rating | - | |||
| Audio Quality Rating | - | |||
| Battery Life Rating | - | |||
| Value For Money Rating | - | |||
| key specs | ||||
| Headphone Type | In-Ear | On-Ear | ||
| Microphone | Yes | Yes | ||
| Connectivity | True Wireless Stereo (TWS) | Wireless | ||
| Type | Earphones | Headphones | ||
| Colour | - | Black | ||
| general | ||||
| Brand | Sony | Sony | ||
| Model | WF-1000XM4 True Wireless Stereo (TWS) Earphones | MDR-ZX550BN Wireless Headphones | ||
| Release date | June 1, 2021 | August 22, 2017 | ||
| Model Number | WF-1000XM4 | MDR-ZX550BN | ||
| Type | Earphones | Headphones | ||
| Headphone Type | In-Ear | On-Ear | ||
| Connectivity | True Wireless Stereo (TWS) | Wireless | ||
| Colour | - | Black | ||
| product details | ||||
| Microphone | Yes | Yes | ||
| Driver Type | Dynamic | - | ||
| Driver Size (mm) | 6 | - | ||
| Number of Drivers | 1 | - | ||
| Water Resistant | IPX4 | - | ||
| sound features | ||||
| Frequency Response Range | 20Hz-40,000Hz | 20Hz-20,000Hz | ||
| Noise Reduction (dB) | - | 10 | ||
| connectivity features | ||||
| Bluetooth | Yes | Yes | ||
| Bluetooth Version | 5.2 | 3 | ||
| Bluetooth Codec Support | SBC,AAC,LDAC | - | ||
| battery features | ||||
| Charging Port | USB Type-C | - | ||
| Battery Life (Hrs) Earpieces Only | 8 | - | ||
| Battery Life (Hrs) With Case Total | 24 | - | ||
| Battery Life (Hrs) | - | 29 | ||
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