Flat, (1/2 cm thick), 5" x 1-1/2", (12.5 cm x 4 cm). Powerful magnet on back, stores on fridge, locker, electric box, etc. Has 2 bright L.E.D. bulbs. Single operation button, (hold for on, release for off). Has an eyelet/hole at the bottom for a cord/lanyard, (cord NOT included). CAUTION: Do not place magnetic materials near computers, discs, DVD's, credit cards, or other items that are senstive to magnets. Do not place directly on computerized sewing machines.