Size: 11 x 7.2 x 1.7 cm.Power by 2 CR2032 3V cell batteries ( included ).Net Weight: 109g.Capacity: 100g x 0.01g.Miniature pocket size fits in the palm of the hand.3 key operation and easy-to-read LCD back lite display.6 unit's selections: g /oz /ozt /dwt /ct /gn;Tare weight function.Low battery warning.Calibration: auto calibration.Operation temperature:10-30?C.Press TARE and wait until"0.0" is displayed.Auto shut off.China patent ZL 200730056241.9.