This is a Rolex Oyster Perpetual Datejust watch, specifically the full stainless steel model with a smooth bezel and blue dial.
Key Details
• Model Family: Rolex Oyster Perpetual Datejust
• Common References:
◦ 41mm: 126300-0001
◦ 36mm: 126200-0006 (blue dial variant)
• Case/Bracelet: Oystersteel with the classic Oyster bracelet
• Bezel: Smooth, polished stainless steel bezel
• Dial: Bright blue dial with applied stick hour markers
• Date Window: 3 o'clock position with the iconic Cyclops lens
• Movement: Manufacture Calibre 3235 automatic movement, with a ~70-hour power reserve