The main unit is not included. I purchased this as a spare part, but I don't think I've used it, and it's mostly unopened. I believe there shouldn't be any problems, but please be aware that there may be age-related deterioration due to the product's age. Also, I believe this is a bezel and belt for a DW-6300B-2, but I no longer own the main unit, so I don't know if the bezel and belt can be attached. Please check the images carefully before purchasing. G-SHOCK #CASIO #Casio #Watch #Belt #Bezel G-Shock #GShock #GSHOCK 56