905nm + 470nm Nail Device - USB Powered Nail Care Tool for Home Use Healthy Nails

‌Operating Instructions 1.Place the device on the nail and press the operating button. 2.Light will begin to blink and the device will emit visible blue light. 3.The device will operate for 7 minutes and shut off automatically. Note: Device may not be used while charging battery. Please allow battery to be fully charged before use.