Rondedzero yeMagirazi eKunwa Joy irondedzero yemagirazi ekunwa akagadzirirwa zvinwiwa zvakasiyana-siyana. Rondedzero iyi inosanganisira mafomu ane tsoka refu neasina, kubva pagirazi diki reshoti rine urefu hwe74 mm kusvika pagirazi reshampeni rine urefu hwe222 mm. Joy inogadzirwa nesoda girazi ichishandisa nzira yekudzvinya yeotomatiki, uye chidhindo chekudzvinya chechidimbu chimwe chinochengetedza kugadzirwa kuchifamba nemazvo. Chimiro chayo chinofemerwa nemuchero wakaoma wemuchindwe weparadhiso uye chinosanganisa mitsetse yechisikigo neyejometri. Zvinyorwa zvemitsetse zvinogadzira magadzirirwo anonzwika zvakanaka pakubata. Chimiro chemuromo wakashama chinokodzerawo zvinwiwa zvinopisa.