New In Box Batteries Included With a Sapphire stud finder, you have the fastest, easiest, most accurate stud finder on the market To operate the Sapphire 9000, simply press and hold the button then place it on the wall and go. There is no calibration procedure. You can instantly find studs. Once you have it on the wall, the LEDs show you right where the stud is. When you move the unit back and forth, the Sapphire 9000 continues to track the location of the stud which makes it easy to instantly see the edges and the center of the stud. Sapphire stud finders are the most accurate stud finders because they have more sensors. Other stud finders typically have only 1 or 2 sensors. The Sapphire 9000 has 9. With Sapphire’s patented technology, you can find stud positions with unbeatable accuracy. The wide display on the Sapphire 9000 allows you to see the full width of objects such as double studs and multiple studs. The Sapphire 9000 is the perfect tool for many projects ranging from hanging pictures, to installing cabinets and flat screen TVs. Once you try the Sapphire 9000, Sapphire stud finders will quickly become your favorite. Sapphire stud finders are proudly made in the USA from global components.