Audio Alert: no | Batteries Included: no | Battery Size: 9v | Brand Name: zircon | Color: yellow | Detects Metal: yes | Model Number: 65946 | Packaging Type: carded The Zircon StudSensor EDGE stud finder finds the edges of wood and metal studs behind walls. The easy-to-read display and patented SpotLite ® Pointer System clearly identify the edge of the target. The patented pivot pinch grip design allows for a comfortable, secure hold in either hand, at any angle. Included assorted hooks and nails for picture hanging. | Finds wood and metal studs or joists | Works on drywall, plaster, wood | Four red indicators and green ready light | Self calibrating | Non magnetic | Uses 9 volt battery