Combining the best features of our AirCurve waveguide and our Window Mount for your car, we"ve come up with AirCurve Window Mount. It gives you two ways to mount your iPhone 4 or iPhone 4S in your car: a super-cling base to stick to glass like nobody"s business, and a mounting base for your console or dash. The AirCurve waveguide built into the swivel mounting base gathers the sound from your phone"s tiny speakers and amplifies it acoustically - up to 25 decibels louder. AirCurve Window Mount is great for listening to music, or taking handsfree calls - and Siri will appreciate it, too.