This watch and battery tester analyzes the electronic pulses that go out of the watch and determines whether the watch is in good order and if the battery is still working. If you just replace the watch battery and the watch refuses to run, chances that the timepiece itself is damaged, use this analyzer to know for sure. You can also test to see if the battery is in good shape, it analyzes both silver oxide and lithium watch batteries. Senses electronic pulses from the watch then beeps and flashes indicating the battery is good. analyzes both Silver Oxide and Lithium watch batteries.Features:1. Made of high quality materials, lightweight and durable.2. Brand new battery tester to batteries without even opening the watch case with the help of pulse test.3. It can also test coils.4. Check lithium, silver oxidized low drain and high drain batteries as well.5. Necessary tools for watchmakers and watch repairing workers.Specification:Condition: 100% Brand NewItem Type: Watch AccessoryMaterial: Plastic + MetalColor: As Shown in The PicturesSize: Approx. 6 * 3 * 2inWeight: Approx. 226gPackage List:1 * Tester1 * Connect lineNote:Battery is NOT included.