In a normal adult man, it weighs two thirds of an ounce [20 g] and measures, at most, 1.6 inches [4 cm] along its transverse axis, 1.2 inches [3 cm] along its vertical axis, and 0.8 inches [2 cm] along its horizontal axis.
Veselam pieaugušam vīrietim tās svars ir 20 grami, savukārt izmēri, pats lielākais, 4 centimetri šķērsgriezumā, 3 centimetri vertikāli un 2 centimetri horizontāli.