... :13.5gLife of battery:used 3 yearsMaterial:environment silicone, nontoxic and tasteless.colour:can make red, yellow, green, ... for men and women, beauty and fashion, nontoxic and tasteless, durable, use it so many times and unmodification. Silicone energy balance ... for men and women, beauty and fashion, nontoxic and tasteless, durable, use it so many times and unmodification. Silicone energy balance ...