Before using, please read the following terms carefully: 1. Make sure that the tip of the needle is upright and no objects touch.the button of the power supply have a line ,it's the ground wire . Please do not connect with the ground wire to the plate ,it's too close will be arcing leading to burn, please kindly know it . 2. Do not touch the tip of the needle with any objects,when it's work. 3. In order to prolong the service life of the product, use it with a fan, and the continuous working time should not exceed 1 hour. It is recommended to use it intermittently, that is, work for 1 hour and rest for 5-10 minutes. 4. Use environment: temperature should not exceed 30, humidity should not exceed 80% Power: Less than 10-15W Input voltage: AC220V-50HZ/60HZ, Output voltage: DC-15KV0.5KV Negative ion concentration: 200 million/cm Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on The actual product may have slight color difference or difference, which will not affect the use Voltage: AC 220V Colour:White Material:Plastic + Metal Package Contents: 1 x Negative Ionizer 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 96 hours Hope you have a pleasant shopping experience!