Description: and Feature: 1.Sometimes when the battery of your watch is low, you may try to take off the back case by yourself. However, it may be so difficult to open it without the tools. At this time, you could try this watch back case opener 1.By using this case opener, you could easily open the back case of your watch. Whether you're a professional watch repairer or you just want to change the batteries in your watch instead of taking your timepiece all the way to a jeweler, this watch back case remover enables you to remove the back casing from your watch to do the job 2.Made of SK2 alloy steel and plastic, this watch back case remover could meet your need for a long time. Don't need to worry that it will be useless after falling to the floor 3.Once you need to detach the watch back case, replace the battery and even adjust and repair the watch strap, you could use the professional repair tool to do the job with the simple operation 4.As for suitable watch, this watch back case opener could give you a hand when you are repairing most of the wristwatches 5.Make the maintenance on your own easier without paying for repairing. Just set up your watch, open the back, switch the battery out and then close the back. All these could be done at home within a few minutes Specification: Material:Plastic,SK2 Alloy Steel Function:Watch cover detachment,battery replacement and so on Type:Tools Type of Tool:Watch Opener Tool Feature:Easy to Use Usage:Maintenance Packaged:Opp bag Size Chart: Size---------------------Total Length---------------------Other Details A1,A2-------------------82mm----------------------------Handle Length:60mm,Blade Length:22mm,Blade Width:9mm A3,A4-------------------81mm----------------------------Handle Length:57mm,Blade Length:24mm,Blade Width:9mm A5----------------------110mm---------------------------Handle Length:70mm,Blade Length:40mm,Blade Width:5mm A6----------------------115mm---------------------------Handle Length:84mm,Blade Length:31mm,Blade Width:10mm A7----------------------110mm---------------------------Handle Length:69mm,Blade Length:41mm,Blade Width:6mm A8----------------------130mm---------------------------Handle Length:90mm,Blade Length:40mm,Blade Width:4mm A9----------------------140mm---------------------------Handle Length:92mm,Blade Length:48mm,Blade Width:6mm A10---------------------92mm----------------------------Base Length:65mm,Width:50mm,Screw Length:27mm Note: 1.please allow 1-3 cm/ 0.39-1.18 inch difference due to manual measurement and 3-5 g/ 0.007-0.01lb/ 0.11-0.18oz for the difference between different colors 2.due to the screen difference, the color may be a little difference from what you expect, please allow it Packaged include: 1 x watch back case opener Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.