Piaget's ultra-thin Altiplano is a watch for those who appreciate discretion and refined complications. Forget those hulking great big watches that sit on the wrist like a can of tuna, shred your shirt cuff and set off security alerts, the smart way to wear a watch is to go for the slim-line look. And ultra-thin is Piaget's speciality. In fact, this year, Piaget is celebrating the 50th anniversary of the arrival of its legendary Calibre 12P that in 1960 was hailed as the thinnest self-winding mechanical movement. 2010 sees a re-incarnation of this lithe movement with the presentation of the Calibre 1200P that has set new records. The Calibre 1200P movement is a mere 2.35mm high and the Altiplano anniversary edition is itself but 5.25 mm thick. With a purist approach, rather than clutter the dial, this gentlemanly timekeeper limits itself to tracking only hours and minutes. Afterall, leave chasing the seconds to those who don't value leisure. But it does its job rather well and the improved calibre contains components scarcely more than a hair's breadth that are nonetheless pushed to micro-mechanical limits. The anniversary edition is available in pink gold with a shimmering midnight blue dial or white gold with a black dial and only 235 will be made of each. Why 235? Because the thickness of the movement is 2.35mm. The second model, that features a seconds display at four o'clock is not a limited edition, but equally desirable. This model is the Piaget Altiplano 1208P, and like the limited edition measures 43mm across. So just how did those geniuses at Piaget make a movement so slim that sneeze and it almost flies off the table? Being a 'manufacture' is key to this achievement. With all components made in-house, the team are able to tinker and perfect to their hearts' content. The micro-rotor that gathers energy from the movement of the wrist is off center and tucked into the movement itself. Other thicker movements would have their larger rotor sitting atop the movement adding bulk. To compensate for its reduced dimensions, the rotors are made of dense platinum, in the case of the 1200P or white gold for the 1208P. With every component reduced to its minimum, there is still room for decorating the components. The movement shimmers with bevelled bridges, Côte de Genève decorations, sun ray brushed wheels, satin-brushed steel parts and blued screws. This may all be double Dutch to some, but one look at the movement will explain that all these finishes add up to one special looking movement. Clever tricks such as the flat glass (the trend has been for bulging domes for well over a decade), elegantly tapered lugs that join the case to the strap and a slender bezel all contribute to the effect of lightness. The dial itself is decorated with a guilloché or engine-turned pattern and catches the light with its various levels. If it is slim line perfection you after, then it doesn't get any better than the Altiplano.