Specification:Item Type: Quartz Movement DetectorMaterial: PlasticSize: Approx. 12 x 6 x 1.7cm / 4.72 x 2.36 x 0.67in Battery Model: AA battery (Delivered without battery)Quantity of batteries: 2pcsApplication: Quartz movement measurement battery measurement toolThe following steps can help you do this:For Quartz Pul Checkers1. Push the switch up.2. Put the quartz watch or movement in the dial position for testing and one of the following results will appear.(A) No sound and no green light:The battery or electronic components are in poor condition.Solution: Check/replace battery and retest.If still no respon check/update electronic parts or complete movement.(B) If there is a sound and the green light is flashing but the hands do not move:= The battery and electronic parts are in good condition but the mechanical parts are in poor condition.Solution: Check/update mechanical parts and retest.If there is still no respon complete the exerci again.(C) If a sound is heard the green light is flashing and the hands are moving: The quartz watch or movement is in good condition.For coin cell battery checker1. Push the switch down.2. Place the battery in the battery test board position for testing; make sure the positive (+) side is down.3. Press the plastic button and the battery level indicator will indicate the voltage.Yellow light = update required weak voltageFirst green light = low 10.5 volts.cond green light = OK 1.55 volts.Third green light = OK 3.00 volts.Package List:1 xQuartz?Movement?DetectorNote:Manual measurement there is a little error