This Cardinal Red Ionic Classic waterproof IO?ION! watch timepiece is ultra light, comfortable waterproof and super sleek. The high quality silicone in the ION bracelets are infused with tourmaline: a semi precious stone known for its natural electrical charge and ionic charges. Its ionic properties are activated by body heat and released when wearing the watch. Its beneficial health effects include: increased concentrationnatural detoxificationimproved sleep, relaxation, and meditationimproved vitality and mood.IOION is the little Italian watch, better described as a fashion bracelet-with-a-function, particularly when it is worn in multitudes. And when it comes to the celebrities who wearing IOION watches, the ongoing theme seems to be the more, the better. A-Listers like David & Victoria Beckham, Adam Lambert of American Idol fame & pop-princess Katy Perry have been seen wearing as many as 5 watches at a time. Nicole Polizzi, better known as "Snooki" (thanks to her role on MTV's Jersey Shore) was recently seen wearing IOION at a Hollywood event. Her favorites are Lavender, Yellow Neon and Orange Neon - all from the IOION "Classic" Collection. Unisex designwaterproof (3 ATM water resistant)ultra light (10 g)Tourmaline technologyAvailable in Sizes: S / M / L S - Most Women & Some Children (6.3 Inches)M - Some Men & Most Women (6.7 Inches)L - Most Men (7.1 Inches)12 months warranty