Great for detail work. Used by jewelers, clock & watchmakers, hobbyists, etc. 10X with 1-1/8" diameter optical glass lens and adjustable focus. Measures 1-15/16" x 2-3/4" x 1-3/4". 1 super bright white LED. 1 UV bulb: 395-400nm. 3-stage On/Off Button (Low Power LED, High Power LED, UV Light On). Rubberized black plastic body. Runs on one 23A-12V battery, included. China.