Kohstar S520 4th generation robot lawn mower with Range Funtion,Auto Recharged,Remote Controller,Waterproof
Starts from 902.50
4pcs? of blade every edge can used if?one damaged by hard stone or other objects
Rear wheel it heavier than S510,can keep from slippery when running on slopes and hills.
Charging connection S520 has a better connection
front wheel? it is softer than the old one ,against the vibration when working , with stainess steel holder ,against rusting