Personal energy management: placed on desks and bedside tables to help create a positive and balanced personal energy field, relieve stress and fatigue. Space Purification: Placed in the living room, bedroom, or office of a home, it helps to clean negative energy in the environment and enhance spatial comfort. Electronic device protection: placed near computer monitors, routers, and mobile phones to reduce the impact of electromagnetic radiation (EMF). Energy item charging: can demagnetize and enhance energy for items such as crystals, gemstones, jewelry, etc. Color: As Shown Material: PLA+Copper Package Contents: 1 x MWO Polarization Disk Multi Frequency Oscillator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.