Diadem is manufacturer of mobile devices which sells around 100,000 - 200,000 devices every month. Diadem makes devices with both Qualcomm and MTK processors. Diadem makes a MTK 6572 based device for around 55 USD. Another MTK 6572 device with NFC sells for 99 USD. Diadem makes a MTK 6589 device with 5" screen for 100 USD. For 195 USD Diadem makes a 5" FHD device with a Qualcomm processor and NFC. Diadem makes a much smaller device for a MTK 6572 processor. Diadem makes a water proof feature phone for 37 USD.