The Rolex Datejust 31 is the perfect mid-size model of the iconic Rolex Datejust collection. Its versatile 31mm case size makes this watch the perfect compromise between presence and wearability, making it perfectly suitable for a wide range of wrist sizes. First introduced as part of the full Datejust line that was introduced in 1945, the 31mm model has evolved through a series of generations while maintaining the distinctive date window at 3 o'clock and the unmistakable fluted bezel. Available in a variety of metal combinations - stainless steel, two-tone and precious metals - the Datejust 31 presents the perfect balance of traditional looks and practical applicability.