YELL Miniature Harmonicas - Set of 6. New, unused, and unopened. Apparently, they actually make sound. When I placed a ruler next to one, it appeared to be about 45mm tall, 15mm wide, and 12mm thick. This is an amateur measurement, so please consider it as a reference only. Individual sales are accepted. If you purchase with other items, I can offer a discount, so please take a look at my other products as well.