Key Description: ZERO: the zero key zeroes the scale TARE: the tare key subtracts tare values and changes the tcs from gross mode to net mode M: the M key used to store data in your scale M : M key will store and accumulate the value of weight and amount M1-M5: Stores unit price value at 5 different locations C: The C key is used for canceling the memoried data 0-9: The number keys are used for setting unit price data . : DECIMAL P0INT key is used for set the decimal position of unit price BASIC the Scale: Package Includes: 1 x Platform Scale 1 x User Manual 1 x Charger.