Amazon.com : Segway Ninebot ES4 Electric Kick Scooter- 800W Motor, 28 Miles Range & 19MPH, 8" Solid Non-Pneumatic Tires, Dual Brakes, Suspension System, External Battery, Commuter Scooter for Adults & Teens :
Amazon.com : GLDYTIMES Original Control Board Replacement for Segway Ninebot ES1 ES2 ES4 Electric Scooter Mother PCB Controller Assembly Electric Kickscooter Motherboard Kit, 2.0 Upgrade Version : Sports & Outdoors