Negative ion stickers that block 99% of electromagnetic waves, supporting health. [Product Overview] ANTI-RADIATION's electromagnetic wave prevention sticker reduces the effects of electromagnetic waves by attaching it to your smartphone. It's the perfect item for those concerned about their health. [Health Considerations] Designed to prevent health problems caused by electromagnetic waves, it helps maintain health in daily life. Instant purchase OK Also listed on other sites, so there is a possibility of selling out quickly.