The Adam CB Compact Balance range is ideal for simple classroom or laboratory weighing. Simple operation and easy to clean. They are battery powered (2 x AA batteries included) making them useable out in the field.3 weighing units (g lb oz)A compact portable scale which is ideally suited for a variety of uses and applicationsSmall and easy to useBright green backlit LCD display shows clear resultsSimple to use keyboardGrade 304 stainless steel removeable top pan for easy cleaningSimple keypad for users of all agesDurable enough for the classroom and covered by a 2-year warranty Batteries included