This is Navimow X4 and it is so TOUGH! These two Lawn Mowers have been mowing the lawn 4 days a week quietly! They really work and save you time. X4 now starts at $2,099 through July 8 Official Website: z.navimow.com/4eAHPvY X4 on Amazon: z.navimow.com/4b0NhHw i2 LiDAR on Amazon: z.navimow.com/4eRmfot #Navimow #mower #robotmower #NavimowX4 #Navimowprimeday #primeday