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1. Size: dia. 2 - 15mm.
2. Color: black.
3. Main ingredients: tourmaline, kieselgur, anti-bacteria material.
4. Function: anti-bacterium and activation.
5. With the character of good heat-storing, high hardness and infrared, it is widely used for human healthy, water treatment, spa and environmentally friendly.
Function & benefits
1. Increase air negative ion concentration.
2. Increase dissolved oxygen and activate water.
3. Micro-clusterd water hydrate cells more efficiently.
4. Mineralization water.
5. Improve the taste of water.
6. Inhibit microbe breeding.