1Uses safe germicidal UV light technology, can kill up to 99.9% of bacteria quickly. 2Use for sterilizing the metal nail art tools. Such as tweezers, nail nippers, salon peelers. 3Made of aviation grade aluminum materials for long time use. 4Built-in high-performance lithium battery, charging 30min, 8 hours long battery life. 5Charged by USB cable, more economical and environmentally friendly.Features:Uses safe germicidal UV light technology, can kill up to 99.9% of bacteria quickly. Use for sterilizing the metal nail art tools. Such as tweezers, nail nippers, salon peelers. Made of aviation grade aluminum materials for long time use. Built-in high-performance lithium battery, charging 30min, 8 hours long battery life. Charged by USB cable, more economical and environmentally friendly. Lightweight and portable, Perfect for home, office or outdoor travels. Specification:Item Type: SterilizerMaterial: Aviation Grade AluminumOptional Lamp Beads: 3mW, 20mWColor: WhiteVoltage: 5V DCPower Supply: USB ChargingSterilization Time: recommended kill time 10-20sSterilization Range: recommended distance 5cmSize: Approx. 12.2 x 3 x 1.7cm / 4.9 x 1.2 x 0.7inchWeight: Approx. 137g / 4.8inchPackage list:1 x Main Machine1 x USB Cable1 x ManualSteps for usage:1. find the bottom button, unlock the child lock2. long press 3 seconds front opening key3. Irradiate objects that need to be sterilized