Holder lock button will break soon. I do not have a week. Changing the number designation will also change when touching chaotic miscellaneous, it can not be used unless it is a person who uses it considerably carefully.
Since it is a number key, it is convenient because it is not necessary to carry around the key and changing the number is easy. I bought a white, but the color look is a little grayed in, it is not pure white. The bracket was too loose for the 25.4 mm diameter seat only with accessories, and 2 mm thick rubber was added. I think that the screw for fixing the bracket will rust soon so I would like to replace it with stainless steel.