Item Type: Hand Metal Detector_x000D_ Material: Plastic_x000D_ Purpose: Metal Detection in Cow Stomach_x000D_ Battery Model and Quantity: 1 x 6F22 Dry Battery (Not Included) 1[Professional Tool] Used to detect whether there is iron wire in the cow's stomach, then use a cow's stomach iron extractor to take iron or put a magnetic cage in the cow's stomach. 2[Sound And Light Alarm] High sensitivity, sound and light alarm at the same time when metal objects are detected, to prevent iron wire from puncturing the cow's stomach, easy to use. 3[Indication] When the machine is turned on, there is a sound and light prompt function, and it will enter the normal working state about 2 seconds after turning on the machine. 4[Energy Saving] This cow stomach metal detector can work continuously for more than 40 hours, the 9V battery is reduced to about 7V, and the detection distance remains unchanged. 5[Power Reminder] When the battery is used up, there will be a continuous alarm sound, yellow light will be on, you can replace battery in time, it is made of plastic, durable and drop resistant.1 xHand Metal Detector 1 x Manual