The Cateye Padrone Smart Head with Speed, Cadence and Bluetooth HRM monitor Unit is an updated version and can now link up with Bluetooth sensors, mobile phones and upload to cycling apps (check compatible apps). The Padrone Smart allows you to quickly and easily display accurate and useful data whilst you are riding. Use either Mirror Mode or you can use Direct Mode. Mirror Mode sends data from your smartphone to the Padrone head unit where you can view it in an easy to read format. In this mode GPS signals are used in order to measure Speed and Altitude. Whilst in Mirror Mode the Padrone will still Display incoming calls, emails and text messages to alert you.