Feature: 1. ULTRASONIC: 12,000 vibrations per minute, creating waves that constantly wash away contact lenses, stripping away tear proteins, oil, dust and other harmful substances. 2. USB CHARGING: Contact lens case can be charged via a USB cable, so you can connect it to a variety of computers, mobile phones and mobile power sources for charging. 3. COMPACT AND PORTABLE: Contact lens cleaner case is small and light, so it doesn't take up too much space when in use, and is also compact and portable when not in use. 4. SAFE MATERIALS: Contact lens box is made of premium ABS and PP material, which is hard and reliable, wear resistant and drop resistant, with a long service life. 5. AUTOMATIC CLEANING: Contact lens cleaner box cleans automatically when powered, you can turn it on or off at the touch of a button and the ripple swirl cleans from the inside out. Specification: Item Type: Contact Lens Cleaner Case Material: ABS, PP, Electronics Product Size: Approx. 87x89x34mm / 3.4x3.5x1.3in Battery Type: Lithium Battery. Package List: 1 x Contact Lens Cleaner Case Note: All data are measured manually, and there are certain errors in the measurement results.