IWC  Automatic movement
*Hack mechanism (second hand stops when crown is pulled out to set the time - standard feature on all genuine Rolex watches)
*Sapphire crystal watchglass
*Screws in the links. not pins
*Rolex logo etched at 6 oclock position on watch dial
*IWC  Rubber seal at trip-lock winding crown
*Heavily micron-plated genuine gold
*Serial band/number on last link/lugs
*Fliplock oyster bracelet. steelinox clasp. serial number on clasp
*Solid back with characteristic Rolex green sticker
*Screw-in watch crown
*Luminescent hour markers/hands
*Waterproof (can be worn for regular swimming with no problems)
*IWC  All the appropriate Rolex markings in the correct places