Precise non-contact measurements User selectable C-F Selectable body and surface temp Memorization of the last 32 measurements Automatic Data hold &Auto power off Automatic selection range and Display resolution 0.1c (0.1F) Weight :100g Machine size :9x4.3x14.7cm Packing volume :54.5x34x34cm(60pcs/ctn) N.W.:6KG G.W:10.6KG The products mainly consist of an infrared sensor, a processor, a liquid crystal display(LCD), buttons, a plastic shell, two batteries, and a circuit board. Power :2x1.5V(AA LR6)