Features 1、Dual Functions: Watch tester with 2 functions, which can detect quartz movement circuits and button batteries, a practical watch repair tool. 2、Easy Operation: Watch movement detector is equipped with detailed operation instructions, which is easy for you to use and measure accurately. 3、Professional Tool: Watch battery detector is a professional tool for watch repairers, which can instantly test your watch movement and battery. 4、Portable Size: Quartz movement detector is small in size and light in weight, which allowing you can take it out for testing anytime, anywhere. 5、Excellent Plastic: Watch movement detector is made of high grade plastic material, provide high accuracy measuring, which is sturdy and durable for use. Specification Item Type: Quartz Movement Detector Material: Plastic Diameter: Approx. 10cm / 3.94in Height: Approx. 4cm / 1.57in Battery Model: CR2016 x 2 (Not Included) Battery Capacity: 75mAh Battery Quantity: 2pcs Application: Quartz movement measurement, battery measurement tool Package List 1 x Quartz Movement Detector