4 Ideal for my needs77genesis | 09/05/2012 | See all 77genesis's reviews (5)This headset does work with the iPhone 4 and allows you to make and recieve calls from the headset itself as well as listen to your music. I have taken a star of due to its build quality. They do seem a little delicate and therefore I wouldn't recommend buying them if you are gonna use them for jogging or any other active use, that said with a little care they are perfect for every day use. In terms of syncing, it is very easy for anyone with general knowledge on pairing up bluetooth devices, but it does come with a manual. Im happy with these as they meet my needs, wireless headphones that i can make and recieve calls from. They do lack a little on the bass however, but thats understandable due to the phone elements within it.