Wireless Phones Technologies BT735S Wired Bluetooth Stereo Earbuds,Handsfree Solution Bluetooth Stereo headset for mobile phones, music players and other stereo bluetooth devices Switches automaticlly from music to phone mode when a call comes in so you're always in touch Excellent sound quality provided by DSP (Digital Sound Processing) circuitry Flexible - Use your own favorite headphones (35mm plug) and retain all features - Microphone and controls are in the clip module Compatible with any Bluetooth device with stereo capability Device must support bluetooth stereo profile (A2DP)