Regarding Shipping Costs: Shipping costs will be borne by the buyer. The displayed price is the total of the unit price + shipping cost. No power required. Just wear it. Of course, there's no need for maintenance, and it's incredibly low-cost. "ion “e” air" is a new form of air purification. ◎ This is a set of one ionia card PLUS + one strap-attached silicone card case. ● Product size: 54mm (H) x 85mm (W) x approx. 1mm (thickness) 【How to Use】 ● Simply put it in something you have close at hand, such as a smartphone case or an employee ID holder, and wear it. ● It is more effective if you wear it near your face, such as around your chest. Also, please use it for air purification near bedding, entrances, and restrooms. ● The number of ions generated will gradually decrease over time. If you feel that the effectiveness has clearly diminished, we recommend replacing it. 【Caution (Disclaimer)】 Please read carefully ● In strong winds outdoors, ions may be carried away by the wind, so we recommend using a mask in conjunction when going out. ● Do not use or store in extremely high-temperature locations or near fire. This may lead to damage to the card. ● The design of the product and packaging may be changed without notice due to improvements, etc. ● Please be careful that infants do not lick or put it in their mouths. ● Because natural ingredients are used, there may be variations in color depending on the manufacturing lot. Shipping Type: Cat-post Shipping Fee: 259 yen/item (excluding tax, including box fee) Selling Price: 3600 yen/item (excluding tax)