... and it mixed MAGMA-Q&Tourmaline2. This ion silicone sport watch can emit negative ions and infrared which made you calm, ... .3. Light weight, fashion design, water resistance (1-3ATM)4. Negative ion emittance about 1700-19005. Far infrared ray emittance(more than ... Silk screen printing, Laser, Imprint1. This is a sport watch, ion watch, fashion watch, silicone watch, wrist watch, rubber watch and ...