Spice Mi-504 Smart Flo Mettle 5X official Pictures. Spice Mi-504 Smart Flo Mettle 5X is a Smartphone of spice. The Spice Mi-504 Smart Flo Mettle 5X Android Smartphone. Announced Feb 2014. Features 5.0″ Display, 8 MP Primary Camera, 1.3 MP Front Camera, 1800 MAh Battery. Spice Mi-504 Smart Flo Mettle 5X price starts.