Porodo Smart Watch Ultra Space 1.86 Inches Wide Screen -Alloy Vacuum Material Watch Case -450mAh Battery Lithium-ion Polymer -1.86 Inches/320x390 Pixel Display -Raise Wrist Wake Screen -4-5 Days Working Time -Bluetooth Music/Call -IP68 Water Resistant -3.0/5.0 BT Version -Magnetic Charger -15 Days Standby -128 MB Ram -192 KB Rom -Heart Rate