I recently bought Apple earphones for my iPhone 4 because I needed new earphones that had a Mic. For the price I got the earphones for I would say the product is not worth the money at all.
Apple is known for it's over priced products and the earphones with the Mic are just another example of just that. The sound quality of the earphones are mediocre and due to the design of the headphones they tend to fall out of you ears while walking of doing anything that involves movement.
The upside of this product even though it is not the greatest product for listening to music, the Mic on the product is very efficient. The controls allows you to pause/play music, has volume controls, also works with the voice control. The Mic picks up your voice when chatting with another person without you needing to hold the Mic and due to the controls on the Mic you never need to take out you phone because the controls allow you to put people on hold, end calls, and decline calls.
On the all and all the product is over priced but it Mic controller makes up for it a bit but with out the sound quality it isn't worth the buy.