With the Samsung Modus 3500 Bluetooth Headset, you can switch between stereo and mono sound whenever you would like. Simply plug the included stereo headset into the HM3500 to enjoy your audio in stereo quality. Noise and echo cancelling technology ensures that your calls are crystal clear, even in noisy environments. The Samsung Modus 3500 Bluetooth Headset can be worn on either ear for your convenience.Other products from A4C