Reads multiple depths (1/2", 1", 1-1/2") for versatility Unique speaker feature provides audible sound when locating studs High-visibility LED indicates precisely when stud edge is located Multimode panel ensures accurate depth indication New, quick-response ASIC technology improves reliability High-impact ABS case built for strength and durability New ergonomically designed styling affords comfort during extended usage Soft-touch felt strips protect surfaces Pocket size allows for easy portability and storage Requires 9-volt battery (not included)