ALERT
Best For
The Sennheiser HD 450BT and Sennheiser MOMENTUM Free target very different users despite sharing the same premium audio heritage. The HD 450BT is an over-ear wireless headphone designed for long listening sessions, offering active noise cancellation, Bluetooth 5.0 connectivity, and an impressive 30-hour battery life. The MOMENTUM Free, on the other hand, is a lightweight in-ear wireless headset focused on portability and everyday convenience. While both deliver Sennheiser's signature sound and support aptX codecs, their form factors, battery performance, and overall user experience make them suitable for different lifestyles and listening needs.
Verdict
The Sennheiser HD 450BT is the stronger overall choice for most buyers thanks to its superior battery life, Bluetooth 5.0 support, over-ear comfort, and better isolation for travel and work. Choose the MOMENTUM Free if you prefer an ultra-lightweight in-ear design for commuting, workouts, or carrying in your pocket. For sound quality consistency, features, and long-term value, the HD 450BT comes out ahead.
| Specification | ||
|---|---|---|
| Price | Rs.14,990.00 |
Rs.14,990.00 |
| Brand | Sennheiser |
Sennheiser |
| Model No | HD 450BT |
Momentum Free |
| Wired / Wireless | Wireless Headphone Specification |
Wireless Headphone Specification |
| Headphone Type | Over Ear |
In Ear Canal |
| Magnet Type | Dynamic |
Dynamic |
| Driver Diameter | 32 mm |
10 mm |
| Impedance | 490 ohm |
28 ohm |
| Sensitivity | 108 dB |
112 dB |
| Frequency Response | 18 Hz - 22000 Hz |
15 Hz - 22000 Hz |
| Maximum Power Input | 12.6 mW |
10 mW |
| Wireless / Bluetooth Details | ||
| Wireless Technology | Bluetooth |
Bluetooth |
| Bluetooth Version | 5.0 |
4.2 |
| Compatible Profiles | All Bluetooth Devices |
All Bluetooth Devices |
| Supported Codecs | A2DP, AVRCP, HSP, HFP, SBC, aptXâ„¢, aptXâ„¢ Low Latency, AAC |
A2DP + AVRCP + HSP + HFP + Apt-X ® + Apt-X ® LL + AAC + SBC |
| Battery Type | Lithium Polymer Batteries |
Lithium-ion Polymer Batteries |
| Bluetooth Range | 10 Meters |
10 Meters |
| Battery Life | 30 Hours |
6 Hours |
| Charging Time | 2 Hours |
1.5 Hours |
| Noise Cancelling | Active |
Active |
| Available Colors | Black, White |
Black |
| Connector Plating | NA |
NA |
| Cable | USB Type C Charging Cable |
USB Charging Cable |
| Weight | 238 gm |
17 gm |
| Other Features | 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. |
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. |
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Frequently Asked Questions
Top Differences
- Battery Life: 30 Hours vs 6 Hours
- Driver Size: 32 mm vs 10 mm
- Bluetooth: 5.0 vs 4.2
- Weight: 238 gm vs 17 gm
- Impedance: 490 ohm Vs 28 ohm