The Truweigh Predator Digital Mini Scale can measure in units of g, oz, dwt, ozt, gn, ct. This scale has a flip-top lid with a durable exterior and a LCD display screen. The scale has a quality stainless steel platform, and users can enjoy long-lasting battery life thanks to the auto-shut off feature that powers down the scale after an extended period of no activity. Includes 2 AAA batteries and 50g calibration weight.