Huadoo V3 IP68 Rugged Smartphone Waterproof Shockproof Dustproof 3G Unlocked Android Dual SIM GPS Navigation(Green) Android 4.4.2, Quad Core 1.2GHZ, 4.0 Inch(850*480 resolution), Gorilla Glass 2 IPS Capacitive, Dual SIM card slots ,RAM:1GB RAM, ROM:8GB ROM, Micro SD card up to 32GB, Standby-time:300hrs, Talk-time:GSM-14hours, WCDMA-8hrs, Camera Front:1.3MP Back:8.0 MP with flashlight(Auto foucs) Supported networks: GSM 850/900/1800/1900mHz WCDMA 850/1700/2100 The Sound is wonderful and loud enough with stereo headset, keep clear phone call and bring you a lot of fun and enjoyment. V3 has been certified by the CTA/CE/ROHS. As a radio transmitter and receiver, its design complies with radio wave radiation by international standard(ICNIRP),so as to ensure the safety of users of each age group with different health conditions. V3 is ultra rugged waterproof, dustproof, shockproof cell phone with several function keys shortcut keys (side keys), easy and convenient to use, the best choice for outdoor sports such as hiking, climbing, exploration etc.