Name: Shi Tester Watch Testing Shi Movement Professional Battery Tester (delivered without battery) Function: professional watch battery detection<br><br>Usage:1. Push the switch up. 2. Put the quartz watch or movement on the "dial position" for testing, and one of the following results appear. (a) there is no sound. No green light:= Battery or electricity, -components are in poor condition. Solution: Check/update the battery and try again. (b) If there is a sound and the green flashes, but the hands do not move:= The battery and electronic components are in good condition, but the mechanical components are in poor condition. Solution: Check/update mechanical parts and retest. (c) If you hear a sound, the green light flash and observe the hand movement:= Quartz watch or movement is in good condition. Used for button cell checker. 1. Push the switch down. 2. Put the battery in the "battery inspection board position" for testing; Make sure that the positive (+) side is down. 3. the plastic button, and the battery indicator give the voltage. Yellow light = need to update, low voltage. First green light-low, 1.05 volts. Second green light = OK, 1.55 volts. Third green light = OK, 3.00 volts. Note: this product is shipped without battery, please bring your own battery (2 x AAA) The printing batches are different, and if there is a slight difference in the color of the actual words, it not affect the use Color: Black Material: plastic<br><br>Package Contents: 1 x Tester<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.