I am selling Sennheiser - HD1 Wireless Over-the-Ear Noise Canceling Headphones/mic that is in excellent working condition and works with Iphone/androud etc. The new ones on bestbuy cost $399 Slip on these Sennheiser HD 1 wireless headphones to enjoy hi-fi sound without interruptions. The NoiseGard technology keeps out background noise, and the high-definition aptX codex ensures you hear all the details in dialog or music. These Sennheiser HD 1 wireless headphones come with a built-in microphone and ear-cup controls so you can take calls from a paired device. Whats Included: Sennheiser HD1 Charging cable Features: Over-the-ear design For a secure fit. Bluetooth 4.0 EDR interface Enables simple wireless pairing with your Bluetooth-enabled device. Supports HFP, HSP, A2DP and AVRCP Bluetooth profiles. NoiseGard active noise cancellation Provides clear, uninterrupted sound. Rechargeable battery Offers up to 22 hours of use on a charge. 3.5mm connector Enables flexible connection options. Built-in microphone Enables simple hands-free chatting via a compatible device. 16Hz - 22kHz headphones frequency response Along with a 100Hz - 8kHz microphone frequency response ensures faithful sound reproduction. 28 ohms impedance To efficiently conduct power. Dynamic transducer design For reference-grade audio. Stereo design Delivers crisp tones. Leather earpads For stylish looks and durability. Folding design Along with an included carrying case enables easy portability. Specifications Key Specs * Wireless 
Yes * Wireless Connectivity 
Bluetooth * Noise Canceling
Yes * Built-In Microphone 
Yes * Adjustable Headband 
Yes * Noise Cancelation Type
Active * Sound Mode 
Stereo * Driver Type 
Dynamic Audio * Noise Cancelation Type

Active * Minimum Frequency Response

16 hertz * Maximum Frequency Response

22 kilohertz * Impedance

28 ohms * Total Harmonic Distortion 
0.5 percent * Sound Mode 
Stereo * Driver Type 
Dynamic