SHARPER IMAGE SBT522BL Universal Bluetooth Wireless HD Headphones with Mic, Volume Control and 3.5mm Jack, Blue Compatible With All Generations of iPhones, iPads, Android Tablets & Smartphones, Amazon Fire Devices, Laptops, PCs, MP3 Players, Kindles, Galaxy Smartphones and Tablets, And Much More! Comfort And Compact Headphones Delivers High-Definition Audio With Integrated Bluetooth Technology Listen To Your Favorite Tunes And Control Playback Wirelessly, Take Calls Hands-Free With The Built-In Microphone Rechargeable Lithium-Ion Battery Ensures A Long-Lasting Listening Experience Battery Meter on Apple Systems (iPhone, iPad, iPod), Frequency Range 20-20KHz Connectivity Technology: Wireless - Bluetooth | Wired