Full Description WorkTunes Connect Bluetooth Hearing Protector – Stereo – Mini-phone (3.5mm) – Wired/Wireless – Bluetooth – Over-the-head – Binaural – Circumaural – Noise Reduction Microphone – Black, Yellow General Information Manufacturer:3MManufacturer Part Number:905434DCManufacturer Website Address:http://www.3m.comBrand Name:WorkTunesProduct Line:ConnectProduct Name:Connect Bluetooth Hearing ProtectorMarketing Information: Enjoy hearing protection and entertainment using the 3M WorkTunes Connect Wireless Hearing Protector with Bluetooth Technology. It combines a modern, comfortable design with Hi-Fi sound quality. This innovative hearing protection lets you conveniently make and take phone calls while you’re on the job. These ear-protective headphones allow you to stream the entertainment of your choice from your smartphone or other mobile device while providing ear protection in noisy environments. Low-profile, lightweight design is crafted with style in mind. Built-in comfort features, such as soft ear cushions and a hat-compatible, low-pressure headband, are excellent for extended wear. Safe Volume control technology allows increased volume yet corrects to maintain safe levels over an eight-hour workday. Audio assist technology provides setup and operational guidance without having to remove the headset. NRR 24 earmuffs require two 1.5-Volt AA batteries (sold separately). Packaged Quantity:1Product Type:Headset Technical Information Connectivity Technology:Wired/WirelessWireless Technology:BluetoothSound Mode:Stereo Earpiece Earpiece Design:Over-the-headEarpiece Type:Binaural Microphone Microphone Technology:Noise ReductionIntegrated Microphone:Yes Interfaces/Ports Host Interface:Mini-phone (3.5mm) Physical Characteristics Color: Black Yellow Form Factor:CircumauralHeight:7.1″Width:3.9″ Miscellaneous Assembly Required:NoCountry of Origin:China