leffective mowing height:20-55mm effective mowing width:19cm gradeability: +/-25% number of blades: 3pcs battery parametewr:20V5Ah charging time: 180 minutes battery life: 120 minutes operation efficiency:100 square metres per hour charging pile:23V2A rain detection: have applicable lawn area: 1500 m2 weight: 9kgs dimensions: 50*35*30cm