UNO TITAN: The 40mm UNO Titan is the smaller and considerably lighter titanium version of the UNO+. The UNO Titan achieves a 30% reduction in overall volume. With a visible thickness of just 2.9 mm, it is noticeably slimmer than its big sisterÕs already slimline 4.9 mm. The biggest difference is in terms of weight, however, weighing just 32 g in total, the UNO Titan is not much heavier than a standard letter and is an incredible 42% lighter than the stainless steel version of the UNO+. The case of the UNO Titan features the same clever details as all UNO models: the sloped sides of the underside of the case allow the wrist maximum freedom of movement, while at the same time enabling air to circulate freely. When wearing the UNO Titan, it is hardly noticeable on the wrist. Is the UNO Titan the right watch for me? The UNO Titan is the ideal watch for anyone with a medium or slim wrist. Because the strap lugs are positioned underneath the case, it is as comfortable to wear as watches of much smaller diameter. The UNO Titan also uses the one-hand principle developed by Klaus Botta in 1986.