The 2011 collection of watches by Frankstone, the wellness watch all boast a distinctive, exclusive new feature: transparency. All the watches in the collection have been designed with a particular transparent window in the face that reveals the stone positioned at the back of the watch case. In the men’s models Nahual and Daemon the stone can be seen through a circular window cut out into the left side of the watch face. Comes with Laline Quartz. Available stones: Amethyst, Tiger's eye, Sodalite, Ematite, Rose Quartz, Red Jasper, Green Jade available for additional purchase.