This is the Model M0A6234 in excellent condition. I've seen this size listed both as a "Men's Medium" and "Ladies". For reference, the outside dimensions of the case are 1 5/8" X 1" (41.3mm X 25.4mm). The actual face size is 1" X 3/4" (25.4mm X 19mm). New battery installed 6 months ago for $50 cost. Ships fast same day before noon pacific time.