The Explorer II is a great daily piece with which you can travel under the radar. The 16570 is the M serial Transitional with the 3186 movement. The watch is in NOS Condition with original card and box. 
 
*** The pictures may show the reflection of the camera lens, black spots mostly ***

Details:
 
Make: Rolex
Model: Explorer II Oyster Perpetual Date
Reference:  16570
Year: 2008
Material: Stainless Steel
Dimensions: 40 mm
Crystal: Sapphire
Movement: Automatic
Bracelet/Strap: Stainless Steel
Box/Papers: Yes/Yes