... 3.High quality 1,Made by grade of silicone rubber and it mixed MAGMA-Q&Tourmaline2,This ... ion silicone watch can emit negative ions and infrared which ... your imune function.3,Light weight(10g),variety colors ,fashion design,water resistance (1-3ATM)4,Negative ion ... .11,This is ion watch, sport watch,fashion watch, silicone watch ,bracelet watch,rubber watch and so on ...