Charge you cell phone or any USB compatible device with the origami"s cell phone charger. Just plug the cell phone charge cord into your stroller and the generators in origami"s rear wheels will charge your phone as you walk. Attach the 3 pocket handlebar bag for a convenient place to store your phone, keys, and other personal items. Origami"s generators charge the stroller first, then your cell phone, so phone will only charge if stroller is fully charged.