... Color Meter + Promoting Item & Free ShippingCheck the color difference between two samples. Color difference displayed Δ(L*,a*,b*) Δ(E*ab,C*ab, ... y) (X, Y, Z) or (Rs, Gs, Bs) Maximum, Minimum and Average function. Tolerance function. Auto memory (99 sets) & Read function ... setsAuto power off:Approx. 3 minutesPower source:One 9V battery and DC 9V AC adapter inputBattery life:Approx. 500 measurements at ...