Blessing digital mechanical alarm clock NOS 1970 Germany

This is a quite unique mechanical piece with rolling discs to create a digital read out. Made by Blessing from Germany in the 1970’s. This is a pre-quartz piece and this function is uncommon in it’s own right. Only seen in wrist watches for a short time in the 1970’s. This also has an alarm function. It comes with the original box and it looks never used. I tested it and it works fine but needs to be wound every day before going to bed! The exterior is orange plastic, the insides are metal. It measures 11,5 cm or 4 1/2 inches wide. Check the attached video for another great alarm clock!