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: Sterilizer Material: Aviation Grade Aluminum Optional Lamp Beads: 3mW, 20mW Color: White Voltage: 5V DC Power Supply: USB Charging Sterilization Time: recommended kill time 10-20s Sterilization Range: recommended distance 5cm Size: Approx. 12.2 x 3 x 1.7cm / 4.9 x 1.2 x 0.7inch Weight: Approx. 137g / 4.8inch Package list: 1 x Main Machine 1 x USB Cable 1 x Manual Steps for usage: 1. find the bottom button, unlock the child lock 2. long press 3 seconds front opening key 3. Irradiate objects that need to be sterilized