LightCharge Hub Dynamo Bicycle USB Charger for Smartphones/iPhones/Lights, SON Type Charges any USB-chargeable devices: smartphones, cell phones, GPS, lights, mp3, batteries Great for charging iPhone 4/4S. BikeCharge Power Pack recommended for iPhone 5. Fits all bicycle frames. SON type connectors. Additional direct connect circuit for your light kit. Lightweight, compact, and highly energy efficient. Compatible with SON-type hub dynamos.