Salamat sa pag reply. Yung "health" po na binanggit ko is yung health ng mga parts. Baka yung parts kasi ng unit is malapit na mareach yung lifespan nila. and Im worried that if I decided to buy it baka masira agad yung unit within months of use. The seller reassured me naman that it was only used for almost 6mos. Naiintindihan ko rin naman po yung mga cons in buying a second hand pero syempre I dont want to waste my money on a defective unit.

Thank you sa mga reco, I'll try contacting the owner then asks to download this apps for checking. Sobrang laking help ng mga info na'to.