Amar K's Profile

Go with the 510 if you don't want resting metabolism (or estimated age). Go with the 500 if you want resting metabolism (and NOT estimated age). Go with the 516 if you want resting metabolism AND estimated body age. HOWEVER, IN MY EXPERIENCE I would caution you that I have both 510 and 516 and learned in comparing the two scales that the 516 does NOT give ANY parameters besides weight (like percent body fat) if your ESTIMATED body age is greater than 80 (probably is over 80 if you actually are over 60 and out of shape or actually over 40 and really out of shape). Tried my mom (62) on both and the HBF-516 kept giving error code "ERR 4", parameters out of range or something like that.