1. Large capacity and multi-function: G41 - Screen size: 6.5''. Size: 11*19.5*9.5cm. Features: Upgraded sunshade cover, multiple installations, new bracket, water zipper. G40 - Screen size: 6.5''. Size: 10*20*10.5cm. Features: Upgraded sunshade cover, multiple installations, new bracket, water zipper. 050 - Screen size: 7.0''. Size: 23*11*14cm. Features: waterproof zipper, easy installation, sensitive touch screen, WVA pressure resistance. 051 - Screen size: 7.0''. Size: 23*13.5*10cm. Features: waterproof zipper, easy installation, sensitive touch screen, WVA pressure resistance. 2. Durable EVA and Waterproof: The bike upper tube bag is made of upgraded sturdy waterproof EVA material, which is highly wear-resistant and ensures better durability. And with a sealed double zipper closure, it ensures that water does not flow into the bag. A better design can perfectly protect your phone in rainy days and extreme environments. 3. High Sensitivity Touch Screen and Visor: This bike frame pack has a high sensitivity TPU film window, you can easily play with your phone or check your activity with GPS while riding. Hidden headphone jack gives you the freedom to take calls or listen to music while you ride.