Sony Stereo Headset MH750 is best in its class. A 9.2 mm dynamic speaker driver behind each earphone and advanced micro audio technology combine to deliver an impressive audio experience. Press the answer key when a call comes in and enjoy comfortable handsfree calling on the go. A HD voice enabled microphone lets your voice be heard with excellent clarity. Connect to phone, computer or other device and enjoy your music and other entertainment. Experience bigger sound for your music and calls with the Sony Stereo Headset MH750.