Rolex Sea-Dweller Deepsea Stainless Steel 126660.
This is a pre-owned Rolex Sea-Dweller deepsea men's watch reference 126660. It has a 44.00mm case size in stainless steel, with black baton dial on a stainless steel oyster bracelet, powered by an automatic movement. 
Dial: Black Baton
Glass: Sapphire Crystal
Movement: Automatic

Case: Stainless Steel
Buckle: Deployant
Buckle: Stainless Steel Deployant
Strap: Stainless Steel Oyster

Case Size: 44.00mm
Strap Length: Adjustable up to 20.5 cm
Strap Width: At Case -20mm/ At Buckle -16mm