Pup Science Khaki RANGER - Dog Backpack Hiking Harness for Medium, Large & XL Dogs, Model: , Sport & Outdoor UL Listed, Full Protection Mechanism: Over Voltage, Over Current/Heat;Short Circuit. Suitable For All Self Balancing Scooter/ Hoverboard/ Driftboard,for All Wheel Sizes: 4.5' 6.5', 8', INPUT:AC 100-240V; 50/60HZ; 2.5A; OUTPUT: DC 42V; 2A NEWX Smart Reliable Charger Can Better Protect Not Only Itself But Also The Hoverboard From NEWX High Quality Charger Can Lengthen The Service Life Of The Hoverboard. US Tri-SMART Charging