Brightest lighting from ring of 10 LED lights circling the ground and polished glass. 2 3/4 inch lens provides best viewing and magnification for any reading or hard to see task. Rugged case and easy to operate switch. Light powered by two ''AA'' penlight batteries (not included). Measures 7 1/4 in. long in total, 3 1/2 in. round diameter, handle is 1 3/4 in. wide x 4 in. long.