Robust and Safe Design: This nose hair trimmer features a dual-rotating blade system and a 360° internal rotating design for precise trimming, avoiding pain and pulling. It is simple and comfortable to use. Waterproof and Easy to Clean: This men's nose hair trimmer comes with a waterproof, detachable, and replaceable head. The product includes four interchangeable heads. After use, you can twist off the head and rinse it under running water for easy cleaning. USB Charging: This nose hair trimmer has a built-in battery and comes with a USB charging cable. It can be easily charged via a power bank, computer, or adapter. Note: The indicator light remains red when the battery is fully charged; this is normal and safe to use. Warnings: 1. Keep the electric nose hair trimmer out of reach of children. 2. The blades of the nose hair trimmer are washable, but the charging base is not. 3. The indicator light remains red when the battery is fully charged (this is normal). 4. Trim carefully, but the system will retain an appropriate amount of nose hair to maintain a healthy and natural filtering function.