Brand new and high quality. We use very good production materials, so its quality is perfect. Work with a constant current LED driver. All our LED chips (Hontiey) are 100% enough power. They will work more than 50000 hours if the working temperature is less than 60 degree celsius. So, they need to work wih heatsinks or thermal silica otherwise the light will die due to too much heat. Application: Perfect for using for curing, detecting, medical, disinfection, scanning, printer, anti-fake, investigation and etc. (Reminder: please do not look directly at the Light within two meters so that can ensure your security for your eyes.) Type:UV light chip Light color:purple Size:1.5cm x 0.8cm Power:3W Wavelength:395nm Voltage:3.0-3.6v Current:600-700ma Luminance:10-12LM QTY:10pcs Package includes:10pcs UV light chips