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Sony MDR-HW700DS
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Sennheiser HDR 175 RF 18hrs Black
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Technical Specifications
| Acoustic System Name | Closed | Closed Back | |
| Battery Life (max) | 12 hours | 18 hours | |
| Battery Recharge Time | 3 hours | - | |
| Battery Technology | - | Nickel-Metal Hydride (NiMH) | |
| Battery Type | - | AAA | |
| Cables Included | Micro-USB | - | |
| Colour of Product | Black | Black | |
| Connectivity Technology | Wireless | Wireless | |
| Depth | 157 mm | - | |
| Driver Type | Dynamic | Dynamic | |
| Driver Unit Size | 50 cm | - | |
| Ear Coupling | Over-ear | Over-ear | |
| Ear Coupling - Over-ear | Yes | Yes | |
| Headphone Frequency | 5 - 25000 Hz | 17 - 22000 Hz | |
| Headphone or Headset | Headphones | Headphones | |
| Headphone Sensitivity | - | 114 dB | |
| Headset Type | Dual Ear | - | |
| Height | 32 mm | - | |
| Impedance | 24 Ω (Ohms) | - | |
| Magnet Type | Neodymium | - | |
| Multi-function Control - Position | On-ear | On-ear | |
| Multi-function Control - Type | Analogue, Digital | Digital | |
| Multi-function Control Present | Yes | Yes | |
| Number of Batteries Supported | - | 2 | |
| Rechargeable | Yes | Yes | |
| Replaceable Ear Pads | - | Yes | |
| RF Connectivity | Yes | Yes | |
| RF Frequency Band | - | 2.4 - 2.48 GHz | |
| Surround Sound | Yes | Yes | |
| USB Connectivity | Yes | - | |
| USB Port - Micro | Yes | - | |
| USB Port - Type | Micro | - | |
| Volume Control Present | Yes | Yes | |
| Volume Control Type | Rotary | Button | |
| Wearing Style | Head-band | Head-band | |
| Weight | 320 g | 310 g | |
| Width | 220 mm | - | |
| Wireless Range | - | 100 m | |
| Wireless Type | RF | RF |
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