Lontano 3.9inch ABS Bicycle Chain Pedal Generator Dynamo Charger to USB 1000mAh - Black Charge your portable electronics by pedaling your bicycle. Includes a USB cable which connects to your smartphone, GPS or other portable device for recharging. Has its own internal battery for storing the power you generate when biking. Makes riding outside more rewarding since you never need to worry about your gadgets running out of power and your exercising is helping to generate energy for your electronic gadgets. New 2018 model of Bicycle Chain to USB Charger (also called a "dynamo charger") is on sale now for our friends in the UK.