DescriptionBy using this case opener, you can easily open the case back to your watch. if you are a professional watchmaker or you just want to change the batteries in the watch without the hassle of taking your watch all the way to a jeweler, this solid metal key allows you to remove the from your clock to do the job.Feature- Color: As shown. - Material: Metal. - Size: 14.5 x 3 x 1.5 cm. - Can open the watch lid with ease. - Suitable for opening watch bottom cover and replacing batteries. - Special movable screw-plug back cover of watch, easy to use, easy to carry. - Professional watch fixing and repair tool, durable. - quality watch fixing tool, watch changing battery.