See: HMX Technology

HMX Technology have introduced the new BLE Bluetooth dongle for HMX speed controllers using iOS mobile devices. The BLE Bluetooth dongle is required to connect the HMX ESC and use the HMX Mobile App to setup the parameters which you regularly use and to fine-tune the throttle and brake feeling, speed, acceleration and so on. The BLE Bluetooth dongle is available separatly or in combo with the Team Orion HMX10 ESC.