NoiseHush BT500 Bluetooth Earmuff Headphones with Mic for All iPhone, iPad and Smartphones - Brown/Beige Specifications: Bluetooth Version: V2.1+EDR, Driver Unit: 27mm, Speaker Frequency Response: 20Hz-20kHz, Operating Range: 30ft (10m), Music Time: Up to 8 hours, Talk Time: Up to 10 hours, Battery: 180mAh Li-polymer Special Features: Genuine Soft Shearling Material, Flexible Headband Construction Ensures Perfect Fit, Integrated Multifunction Button & Volume Control, LED Indicator Displays Connection & Charging Information 27mm Neodymium Driver for Extreme Clarity & Precise Bass, Microphone for Hands-free Calling, Video Chat & Memo Recording, and Convenient USB Charging Outlet Package Contents: BT500 Stereo Headphones, USB Charger, and User Manual Compatible to all iPhone / iPad / SmartPhone / Most Phones Specifications: Bluetooth Version: V2.1+EDR, Driver Unit: 27mm, Speaker Frequency Response: 20Hz-20kHz, Operating Range: 30ft (10m), Music Time: Up to 8 hours, Talk Time: Up to 10 hours, Battery: 180mAh Li-polymer ^Special Features: Genuine Soft Shearling Material, Flexible Headband Construction Ensures Perfect Fit, Integrated Multifunction Button & Volume Control, LED Indicator Displays Connection & Charging Information ^27mm Neodymium Driver for Extreme Clarity & Precise Bass, Microphone for Hands-free Calling, Video Chat & Memo Recording, and Convenient USB Charging Outlet ^Package Contents: BT500 Stereo Headphones, USB Charger, and User Manual ^Compatible to all iPhone / iPad / Smartphone / Most Phones