These are the most low key sports watches by Rolex period. The 16570 are 95% of the GMT Master 2 without the rotating bezel and still remaining the cheapest 40mm Rolex option for a sports watch out there along the Explorer 1 39 and 40mm. The watch, despite looking awesome has been detailed before and looks good for the age overall. It works well, looks good and is ready to be worn daily.
 
Details:
 
Brand: Rolex
Model: Explorer II
Reference: 16570
Year: 2001 (K2xx xxx Serial)
Material: Stainless Steel
Dimensions:  40mm
Crystal:  Sapphire Crystal
Movement: Automatic Cal 3185 GMT Movement
Bracelet/Strap: Original 78790A DE6 (2001) Braceler with SEL 
Box/Papers: No/No