The improved designed shape of the CKM300i reduces unwanted vibrations, reproducing great clarity in sound and rich mid to high tones. The sleek fit improves sound isolation and comfort. Simply put, the CKM300i is a sexy, great sounding headphone that you can take with you anywhere you go. One of the best value for money headsets in the A-T range. The CKM300i is compatible with all Apple iPhones, iPads and iPods with volume control and microphone.