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Philips SHB4205BK/27 BT 4.1 7hrs Black
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Logitech LBT-MPHS400MSV BT 3.0 3.5hrs Silver
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Technical Specifications
| Acoustic System Name | Closed Back | Closed Back | |
| Battery Life (max) | 7 hours | 3.5 hours | |
| Battery Recharge Time | - | 3 hours | |
| Battery Technology | Lithium Polymer (LiPo) | Lithium Polymer (LiPo) | |
| Battery Type | - | Built-in battery | |
| Bluetooth | Yes | Yes | |
| Bluetooth Profiles | A2DP, AVRCP, HFP, HSP | A2DP, HFP, HSP | |
| Bluetooth Version | 4.1 | 3.0 | |
| Cables Included | USB | Micro-USB | |
| Charging Source | USB | - | |
| Colour of Product | Black | Silver | |
| Connectivity Technology | Wireless | Wireless | |
| Continuous Audio Playback Time | 7 hours | 3.5 hours | |
| Depth | 15 mm | 29.5 mm | |
| Diaphragm Material | Polyethylene terephthalate (PET) | - | |
| Driver Unit Size | 12.2 cm | - | |
| Ear Coupling | In-ear | In-ear | |
| Ear Coupling - In-ear | Yes | Yes | |
| Ear Hook present | - | Yes | |
| Ear Hook Type - Over-ear | - | Yes | |
| Extra Earbuds | - | Yes | |
| Headphone Frequency | 9 - 21000 Hz | 2.402 - 2.4835 Hz | |
| Headphone or Headset | Mobile headset | Mobile headset | |
| Headphone Sensitivity | 105 dB | - | |
| Headset Type | Dual Ear | Single-ear | |
| Height | 175 mm | 29.9 mm | |
| Impedance | 32 Ω (Ohms) | - | |
| Magnet Type | Neodymium | - | |
| Maximum Input Power | 30 Watts | - | |
| Microphone Number | 1 | 1 | |
| Multi-function Control - Position | On cable | On-ear | |
| Multi-function Control - Type | Digital | Digital | |
| Multi-function Control Present | Yes | - | |
| Number of Batteries Supported | - | 1 | |
| Rechargeable | Yes | Yes | |
| Replaceable Ear Pads | - | Yes | |
| RF Frequency Band | - | 2.402 - 2.4835 GHz | |
| USB Connectivity | Yes | Yes | |
| USB Port - Micro | Yes | Yes | |
| USB Port - Type | Micro | Micro | |
| Volume Control Present | Yes | - | |
| Volume Control Type | Digital | - | |
| Wearing Style | In-Ear, Neck-band | Ear-hook, In-ear | |
| Weight | 38 g | 6 g | |
| Width | 135 mm | 16 mm | |
| Wireless Range | 10 m | 10 m | |
| Wireless Type | Bluetooth | Bluetooth |
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