Features 1、3 Battey Grooves: Button battery meter designed for most watch cell batteries, with 3 measuring grooves of different sizes to meet most battery models on the market. 2、Capacity Testing: Watch button battery gauge is a great gadget for instant testing of your battery capacity, which can check button cell battery's power. 3、Simple Use: You just need to simply place the button battery in the correct sized socket, the meter will show you the batteries condition, which is easy to use. 4、Accurate Display: Each battery status is accurately marked, this button battery mater allow you can straightforward understanding of the battery situation. 5、Portable Size: Button battery capacity meter is compact in size and light in weight, which is easy and convenient for you to test anytime and anywhere. Specification Item Type: Watch Button Battery Gauge Material: Plastic Size: Approx. 10 x 5.5 x 3cm / 3.94 x 2.17 x 1.18in Color: Yellow Use: Measure the battery capacity of the watch button battery Package List 1 x Button Battery Gauge