This iphone 3gs accessory kit features everything you need in order to get the most out of your iphone including a usb/ac wall charger that eliminates the need for a computer when charging your iphone car charger allows you to charge your device while traveling and 1 crystal and 1 clear and 1 black silicone case a 3.5mm cable allows you to connect your iphone to your car stereo or home theater system (via aux input) an audio splitter allows two headphones to be connected simultaneously airplane adapter allows you to connect your headphones to most aircraft entertainment systems screen protector cleaning cloth and carrying case all included