Two things to remember rth is in meters not feet it does not change even if you change it in the settings,second dont fly it far .when i first got my standard i changed it to Imperial and put my rth altitude to 100 feet like i said rth is in meters not feet so when i flew out of range @2964' in line of sight a speck mind you i hit rth looked down at my range on phone my bird was actually flying further from me because it flew up 375 ft which was what the rth setting was at,and things just went south from there. long story short i went home with a Empty case and to a less ecstatic wife.But hey i got a professional now and have my rth set @35 meters. Happy flying