USA 
HD 450BT Noise-Canceling Wireless Over-Ear Headphones (Black)
Product Description
Enjoy your audio in peace, even outside, with the HD 450BT Noise-Canceling Wireless Over-Ear Headphones from Sennheiser. Thanks to active noise cancellation technology, ambient sounds are filtered out, leaving you alone with your favorite songs, podcasts, and more. Thanks to Bluetooth 5.0 technology, you can enjoy your audio almost anywhere without any cumbersome wires.
Support for AAC, aptX, and aptX Low Latency codecs is meant to enhance your listening experience, but you can further tweak your sound to your specific tastes with the Smart Control app's built-in equalizer. Dual beamforming MEMS microphones built-in provide additional functionality on top of pure listening enjoyment. Pair them with your smartphone for hands-free calls, and use the dedicated digital assistant button to interface with Siri or Google Assistant. Ask questions or use your voice to manage calls and playback.
Support for AAC, aptX, and aptX Low Latency codecs is meant to enhance your listening experience, but you can further tweak your sound to your specific tastes with the Smart Control app's built-in equalizer. Dual beamforming MEMS microphones built-in provide additional functionality on top of pure listening enjoyment. Pair them with your smartphone for hands-free calls, and use the dedicated digital assistant button to interface with Siri or Google Assistant. Ask questions or use your voice to manage calls and playback.
| Item Type | |
| Number of Included Headphones/Receivers | |
| Number of Included Transmitters | |
| Number of Included Headsets | |
| Number of Included Transceivers | |
| Headphone | |
| Earpiece Design | Over-Ear (Circumaural), Closed-Back |
| Earpiece Swivel | |
| Earpiece Connection / Wearing Style | Headband |
| Foldable | Yes |
| Number of Earpieces | |
| Sound Field | |
| Earpad Size | |
| Driver Type | Dynamic |
| Number of Drivers | |
| Driver Size | |
| Diaphragm | |
| Magnet Type | |
| Voice Coil | |
| Impedance | |
| Active Noise Cancellation | Yes |
| Controls/Microphone Location | Controls: Earpiece (Side Unspecified) Microphone: Earpiece (Side Unspecified) |
| Full Remote OS Support | Not Specified by Manufacturer |
| Sensors | Touch |
| Contact Pressure | |
| Performance | |
| Frequency Response | 18 Hz to 22,000 Hz (Wireless) |
| Resonant Frequency | |
| Sensitivity | |
| Matching Tolerance | |
| Maximum Sound Pressure Level (SPL) | 108 dB at 1 kHz |
| Maximum Power Handling | |
| Functional Bias Voltage | |
| Electrostatic Capacitance | |
| Output Power | |
| Volume Limiting | |
| Noise Attenuation | |
| Total Harmonic Distortion (THD) | 0.3% |
| SNR | |
| CMRR | |
| Channel Separation | |
| Storage Capacity | |
| Microphone | |
| Number of Mics | 2 |
| Beamforming Support | Yes |
| Type | MEMS |
| Diaphragm Size | |
| Mic Boom Location | |
| Pickup Pattern | |
| Noise Canceling | |
| Frequency Response | 80 Hz to 6000 Hz |
| Operating Voltage | |
| Sensitivity | |
| Maximum SPL | |
| Impedance | |
| SNR | |
| Distortion | |
| Equivalent Noise Level | |
| Wireless Connectivity | |
| Wireless Transmission | |
| Number of RF Channels | |
| RF Bandwidth | |
| Max Systems per Setup | |
| Wireless Modulation | π/4 DQPSK, 8DPSK, GFSK |
| DECT Standard | |
| Duplex Mode | |
| RF Channel Access Method | |
| Latency | |
| Speech Encoding | |
| Transmission Speed | |
| Approximate RF Sensitivity | |
| Supported Audio Codecs | AAC, SBC, aptX, aptX LL |
| Bluetooth Profiles | |
| Bluetooth | 5.0 |
| Bluetooth Power Class | |
| Wireless Range | |
| Frequency | 2.4 GHz (2402 to 2480 MHz) |
| Transmitter Power | |
| Multipoint Support | |
| Maximum Paired Devices | |
| NFC | None |
| Wireless Chipset | |
| True Wireless Pairing Method | |
| Transmitter Host Connection | |
| Encryption | |
| Wired Connectivity | |
| Audio Connector to Source | 1 x 1/8" / 3.5 mm Male |
| Connector Plating | |
| Adapter (Included) | |
| Cable Design | |
| Audio Connector to Earpiece | 1 x 1/8" / 3.5 mm Female |
| Cable Length | |
| Cable Length | |
| Cable Color | |
| Cable Conductor Material | |
| Battery | |
| Battery Type | |
| Battery Type | |
| Battery Chemistry | Lithium-Ion Polymer (LiPo) |
| Battery Chemistry | |
| Capacity (mAh) | 600 mAh |
| Runtime | 30 Hours (BT+ANC) |
| Runtime | |
| Quick Charging Times | |
| Recharge Time | 2 Hours |
| DC Input Power | 5 VDC |
| Wireless Charging | |
| Charging Port | USB Type-C |
| Charging Cable Length | |
| Number of Channels | |
| Users per System | |
| I/O Connectors | |
| Antenna | |
| Audio Decoding | |
| Number of Charging Ports | |
| AC/DC Power Adapter | |
| AC Input Power | |
| Power Consumption | |
| Additional Runtime | |
| Battery Chemistry | |
| Capacity | |
| Charging Time | |
| Charging Interface | |
| Platform Support | |
| OS Compatibility | |
| Required Hardware | |
| Internet Connection | |
| Charging Temperature | |
| Operating Temperature | |
| Storage Temperature | |
| Operating Humidity | |
| Storage Humidity | |
| Certifications | |
| Physical | |
| Color | |
| Water Resistance | |
| IP Rating | |
| LED Indicator | |
| Material of Construction | |
| Dimensions | |
| Weight | Headphones: 8.4 oz / 238 g |
| Warranty Length | Limited 2-Year Warranty |