Sennheiser HD 450BT Wireless Headphones Head-band Music Bluetooth Black

Sennheiser HD 450BT Wireless Headphones Head-band Music Bluetooth Black

Frequency band: 2.402 - 2.480 GHz Control type: Buttons Total Harmonic Distortion (THD): 0.3% Charging source: USB Cable colour: Black Battery technology: Lithium Polymer (LiPo) Headphone frequency: 18 - 22000 Hz Sound pressure level (max): 108 dB Weight: 238 g Battery operated: Yes Detachable cable: Yes Bluetooth: Yes Quick start guide: Yes Bluetooth profiles: SBC Safety sheet: Yes Continuous audio playback time: 30 h Volume control: Button Control unit type: On-ear control unit 2.5 mm connector: Yes Battery recharge time: 2 h Carrying case: Yes Battery voltage: 3.7 V Microphone direction type: Omnidirectional Cables included: Audio (2.5mm to 3.5mm) Recommended usage: Calls/Music Number of microphones: 2 Product colour: Black Impedance: 35 Storage temperature (T-T): -20 - 60 C Microphone type: Built-in Headset type: Binaural Operating keys: Volume - Ear coupling: Circumaural Connectivity technology: Wired & Wireless Foldable: Yes LED indicators: Yes Product type: Headset Operating temperature (T-T): 0 - 40 C USB connectivity: Yes Wearing style: Head-band Battery capacity: 600 mAh Driver unit: 3.2 cm Driver type: Dynamic USB connector: USB Type-C Bluetooth version: 5.0 Microphone frequency: 80 - 6000 Hz Noise canceling type: Active Battery type: Built-in battery On/off switch: Yes Noise canceling: Yes MEMS (Micro-Electro-Mechanical System) microphone: Yes