3T Eye Cycle ComputerThe 3T Eye is a durable handlebar-mounted cycle computer display unit that is ideal for navigation and training. Compatible with ANT+ and Bluetooth, this cycle computer can be paired with your smartphone and offers accurate speed, cadence, heart rate, altitude, and power data.It monitors the outputs of training aids and communicates via ANT+, and smartphones that are Bluetooth compatible.When paired with a suitable input device, this modern cycle computer will accurately display cycling data such as speed, cadence, heart rate, altitude, and power, in real-time.In Bike Mode, 3T Eye automatically pairs with any ANT+ sensor, such as a heart-rate monitor or power meter, and displays the data on its screen.In Smart Bridge Mode, it captures data from an ANT+ sensor and transmits it via Bluetooth 4.0 to a compatible sports app running on a smartphone, as well as displaying the data.In Smartphone Mode, it exchanges data automatically with the 3T Cycling app (available for Apple IoS) running on a smartphone, enabling real-time data display, monitoring, and recording. Most important for many riders is speed, and this computer calculates it accurately using your smartphones GPS.The 3T Eye offers a clear and sharp display that ensures there is no need to take your smartphone out of your jersey pocket to check your cycling data. The key training data is always visible while your costly smartphone is kept securely out of harms way. 3T Eye fits a Barfly 2.0 mount, and there is a neat 3T stem faceplate adaptor for maximum convenience and security (for ARX II only).The 3T Cycling app is compatible with iPhone 4 and later.Features: Device Size: 38 x 60 mm Display Size: 25 x 32 mm Display Type: Digits/Icon Weight: 25 g (inc battery) Battery Type: CR2032Buy 3T Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.