Ninebot S2/A1 - electric self-balanced unicycle | eBay
Electric Scooter Ninebot One A1/s2 Single-wheel Balancing Car Dual-electric Upgrade S1 Adult Electric Unicycle Scooter - Buy Single-wheel Balanced Car,S1 Electric Scooter,Self-balancing Scooter Product on Alibaba.com
Ninebot One S2
Segway Ninebot One S2 (24 km/h, 1 x 500 W) - buy at digitec