I purchased this CASIO G-Shock DW-5600SF-7JF new about two years ago. It syncs with a smartphone app via Bluetooth to automatically adjust the time. It is currently running accurately. Also, there are no scratches on the crystal, and it is in a clean condition. There is a slight stain near the clasp of the strap, but it is on the back of the watch and is not very noticeable (see image 14). The instruction manual and original box are included. I recommend this multi-functional G-Shock to anyone looking for one.