This Watch Quick Battery Tester Tool is a must-have for watch enthusiasts and battery builders. It is easy to use and takes only seconds to test the battery of a watch. You no longer have to open the back of the watch and remove the battery to test it; simply insert the Watch Quick Battery Tester Tool into the watch, and you will know whether or not the battery needs to be replaced.

• When the indicator lights up the red area, the battery power is low and needs to be replaced.
• When the indicator light is yellow, it indicates that the battery has been used.
• When the indicator is green, it means the battery is full.

Specifications:
Voltage: 3V
Size: 97*51*26mm / 3.82*2.01*1.02"
Material: Plastic
Battery :7mm,10mm,20mm (separately)
Weight: 47 g

What's in the Box:
1x Watch Quick Battery Tester Tool