The 51-30 is the largest watch from Nixon and it is one of the top sellers in their range as well. Over the many years, this model had minor tweaks but this is the first time new material has been used on it and it transforms the watch into a playful item. The Rubber 51-30 utilizes the silicone rubber on its exterior which is similar to The Rubber Player. Application of the rubber instantly makes these less formal and perhaps harder to damage while engaging in water sports. Four color choices are on offer, black, white, royal and shocking pink, with each catering to match various personalities of the owners.