The device is easy-to-use and built to last. It's made from ABS frame material, which is rainproof and sweat proof. Plus, it has a sleek, ergonomic design that makes it comfortable to wear for long hours. Skyraptor Pro also comes with the flexibility and convenience of magnetic charging. It can be charged in just 2 hours and has a 6 hour usage time - making it one of the most convenient products on the market. Lens Material : UV 490 Battery capacity : 100mAh*2 Charging : Magnetic charging Waterproof : Rain & Sweat proof Input : DC 5V = 100mA Charging time : 1-2 hours