Aquapac Mini Phone/GPS Case Mini phone/GPS case interior dimensions: 5.5" height, 6" width circumference Youll be able to talk and hear through it without a problem Its not just 100% waterproof  itll protect your phone from dust, dirt and sand too You wont necessarily have to buy a new one when you upgrade your phone, because its a generic rather than a form-fit case (unlike a hard case, its not tailored to a specific device) It comes with a lanyard so you can hang it round your neck