From the birth of the company in 1845 to the reemergence in 1990, A. Lange & Söhne has embodied the spirit of innovation while maintaining the highest standards of precision, establishing itself as the German watchmaking ideal. Today A. Lange & Söhne, available at Tesorini at Bellagio, retains its place in the watchmaking world with new energy and advancements in the modern collections. If you're in the market for a little luxury, here are two watches to consider:

What it is:
The Datograph Perpetual – featuring a three-part platinum case and two-part dial in silver with a hand-stitched crocodile strap or platinum bracelet – is the first wristwatch to incorporate a chronograph and perpetual calendar.

Why you'll love it:
This timepiece seamlessly blends clean, modern lines and classic accents of decades past and has everything you would ever need to keep track of time: day, month, leap years, day/night indication, moon phase, and outsize date, called so because it remains accurate until the year 2100.

What sets it apart:
Aside from the engineering feat of making the 556 individual parts interact flawlessly, all displays of the perpetual calendar can be individually adjusted or collectively advanced with the main push piece.

What it is:
The Lange 31 is the world's first mechanical wristwatch – featuring a solid silver dial, platinum case and hand-stitched crocodile strap – with a month-long power reserve.

Why you'll love it:
This watch is already creating a tremendous buzz as the latest example of A. Lange & Söhne's ingenuity and penchant for graceful design. Clean lines and a modern face make this watch fit for a superhero: sleek, powerful and purposeful.

What sets it apart:
The key-winding mechanism, a rarity in precision watchmaking, and the constant-force escapement, an A. Lange & Söhne innovation, build energy faster than with a standard crown and harnesses the power reserve necessary to ensure the watch will keep perfect time for 31 days. And since this watch won't be available until 2009, the anticipation will just make it that much sweeter when you're finally able to strap it on your wrist.

A. Lange & Söhne is available at Tesorini at Bellagio. Open daily 10 a.m. - midnight. For more information, call 702-693-7924 or visit bellagio.com.