This is a B-Barrel automatic wristwatch (BB-0026). I purchased this unused and kept it in storage, but I am selling it to organize my collection. It was kept in a watch case, so the strap has a slight curve. It is currently running without any problems. There are no noticeable scratches on the case or crystal, but please consider that this is a used item stored by a private individual, so please understand that there may be minor scratches that do not appear in the photos. There is no box or instruction manual, so it will be wrapped in cushioning material and shipped via Nekopos. Brand: B-Barrel Movement: Automatic (balance wheel is rotating) Case diameter: 40mm Case thickness: 12mm Water resistance: 5 ATM (daily life waterproof) Features: See-through back Tourbillon-style open heart (The second hand is skeletonized and processed into a ring shape, and by overlapping it with the balance wheel on the same axis, it performs a genuine tourbillon-like movement that rotates once per minute. It has a different appeal from one that only shows the balance wheel.) Regulator Small seconds