Material and Size: The Motorcycle helmet wiper is made from premium PP and silicone rubber, ensuring wear resistance, durability, and long term use. It measures 8.1cmx7.7cmx4.3cm.Curved Wiper Blade: The Motorcycle Helmet Windshield Wiper is designed with a curved shape to better fit the helmet lens, providing a clear view even in heavy rain.Easy to Use: This semi automatic helmet wiper is ready to use whenever you need it, without any waiting time required. It features a mechanical toggle switch for easy use.Waterproof and Easy Installation: The entire product is upgraded waterproof, making it safe to use even on rainy days. Installation is easy, clean the installation place, peel off the sticker on the back of the double sided sticker, and stick it in the middle of the lens; let sit for 24 hours after sticking.USB Charging: With an input voltages of 5V, this 2W Electric Wiper can conveniently charge by USB. It has a long service life when fully charged, ensuring reliable performance during your rides. Size Chart: 8.1cmx7.7cmx4.3cm/3.19inchx3.03inchx1.69inch Package Includes: 1 Helmet Electric Wiper Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!