The DX version of the Omni RideCase holds tight and works with almost every smartphone having a 4. 5" to 6. 5" screen, with or without a case. High quality, ultra-elastic silicone grippers tenaciously hold your phone for convenient display. The included RideCase Mount rotates for portrait or landscape orientation. The Omni RideCase is compatible with other RideCase QuickClick mounts, like the RideCase CarMount or RideCase Armband.