Material : Metal + Silicone
Weight : 4.7 inch 190 gram and 5.5 inch 235 gram .
1. Rugged full coverage dust-proof and shock-proof (Definition of waterproof means it is water splash proof.)
2. Drop will not suffer any damage for the phone.
3. Before installation : Please wipe the phone screen and keep it clean.
4. In order to better touch, the phone can not have a screen film .