*Wheel Diameter: 100mm/4-inch
*Battery Voltage/Capacity: 21 V 4.0 Ah Lithium-Ion Battery
*Motor type: Brushless Motor
*Motor type: Brushless Motor
*No-load Speed: 10,000RPM
*Rated Voltage: D.C. 21V
*Package Size: 300*380*110mm
*Product Weight: 1.9kg with battery