| Brand | Sennheiser | Sennheiser |
| Model No | MOMENTUM Free | HD 450BT |
| Wired / Wireless | Wireless Headphone Specification | Wireless Headphone Specification |
| Headphone Type | In Ear Canal | Over Ear |
| |
| Magnet Type | Dynamic | Dynamic |
| Driver Diameter | 10 mm | 32 mm |
| Impedance | 28 ohm | 490 ohm |
| Sensitivity | 112 dB | 108 dB |
| Frequency Response | 15 Hz - 22000 Hz | 18 Hz - 22000 Hz |
| Maximum Power Input | 10 mW | 12.6 mW |
| Noise Cancelling | Active | Active |
| |
| Wireless Technology | Bluetooth | Bluetooth |
| Bluetooth Version | 4.2 | 5.0 |
| Compatible Profiles | All Bluetooth Devices | All Bluetooth Devices |
| Supported Codecs | A2DP + AVRCP + HSP + HFP + Apt-X ® + Apt-X ® LL + AAC + SBC | A2DP, AVRCP, HSP, HFP, SBC, aptX™, aptX™ Low Latency, AAC |
| Battery Type | Lithium-ion Polymer Batteries | Lithium Polymer Batteries |
| Bluetooth Range | 10 Meters | 10 Meters |
| Battery Life | 6 Hours | 30 Hours |
| Charging Time | 1.5 Hours | 2 Hours |
| |
| Available Colors | Black | Black, White |
| Connector Plating | NA | NA |
| Cable | USB Charging Cable | USB Type C Charging Cable |
| Weight | 17 gm | 238 gm |
| Other Features | Signature Sennheiser Sound.
Cutting-edge Wireless Technology.
The battery lasts for six long hours of listening pleasure.
A premium product in every detail the momentum free features custom machined stainless steel in-ear sound tunnels that channel the sound from its high-quality dynamic speaker system lossless into the ear.
Bluetooth 4.2, AAC codec support and Qualcomm apt-X support ensures crystal clear wireless transmission in true hi-fi sound.
It communicates seamlessly with your mobile device thanks to a three-button remote and high-quality in-line microphone between the earpieces.
Battery Specification: Built-in Rechargeable Lithium-ion Polymer (~85mAh) with more than 500 charges. | Smart Control App.
30-hour battery life.
Connect and interact.
Personalise your Sound.
Exceptional wireless sound.
Superior Sound technology.
Enjoy your music – without distraction.
Your audio companion for every need.
Your reliable companion on the move.
App support providing an equalizer, Podcast Mode and Firmware updates.
Intuitive controls including Virtual Assistant button for Siri and Google Assistant.
Great wireless sound with deep dynamic bass and codec support including AAC and AptX Low Latency.
USB-C fast charging and advanced wireless Bluetooth 5.0 technology for effortlessly reliable connectivity.
Crafted from materials and with for outstanding durability with minimalist design available in a choice of white or black. |
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