Smart GPS bike computer with exceptionally long battery life and chest heart rate monitor For long cycling adventures: the ROX 4.0 Endurance supports cyclists on bike tours with exceptionally long battery life, intelligent navigation functions, and ease of use, guiding them safely to their destination—even if they've chosen a different route than the one specified. The large display reliably displays navigation instructions and data such as altitude profile, speed, distance, and training time. Of course, the ROX 4.0 Endurance can also be connected to e-bikes and external sensors! Exceptional battery life Built to handle even the longest adventures, the ROX 4.0 Endurance packs plenty of power. Its exceptionally powerful battery lasts up to 41 hours, giving riders plenty of time to fully enjoy their personal cycling experience. Perfect shape in black Stylish, elegant and sporty: the ROX 4.0 Endurance in stylish black impresses with its elegant design and looks great on any bike. The ROX 4.0 GPS has 30 easy-to-use functions to support you during your cycling adventures. This allows you to focus on what's important: enjoying your ride. The extra-large display reliably displays data such as altitude profile, speed, distance, and training time. Navigation instructions and pairing with e-bikes and external sensors are a matter of course for the ROX 4.0 bike computer! LARGE DISPLAY The high contrast of the 2.4-inch display and exceptionally large digits guarantee perfect readability while driving. Red Circle The innovative RED CIRCLE element in the upper right corner of the display is illuminated in color and offers a new, interesting way to present your training data. EVERYTHING IN EYES The SIGMA RIDE app allows you to customize how your data is displayed. There are six views to choose from, each with three adjustable values. The current speed and time are constantly displayed. READY TO WORK AT ANY TIME! In just a few simple steps, the ROX 4.0 bike computer can be mounted directly on the handlebar – Completely free of cables and sensors. If you want, you can pair the ROX 4.0 with additional sensors to measure speed, heart rate, and cadence. Once turned on, the ROX computer determines your position within seconds via GPS and GLONASS. Thanks to the intuitive three-button operation, you can hit the road straight away. In the SIGMA RIDE app you can set your own data display methods. PERFECT FASTENING The Overclamp Butler mount allows for perfect mounting of the ROX 4.0 cycling computer, even on short handlebar stems. The computer can be easily mounted centrally on the stem near the handlebar. This provides space and organization on the handlebar, allowing you to keep all your readings under control, not just when mountain biking. The mount fits handlebars with a diameter of 31.8mm to 35mm. WHEN YOU ARE HIGH A real advantage of the ROX 4.0 is the built-in air pressure sensor. The barometric measurement provides reliable altitude information, determining ascents and descents, enabling precise route recording. You can also display a graphical elevation profile on the ROX 4.0. The starting altitude at the start of the hike can be calibrated automatically via GPS or set manually. SIGNPOST Connect your ROX 4.0 with the komoot app and put your smartphone in your pocket. Use the komoot app to receive route directions on your ROX 4.0. Directions can be displayed as an arrow or in a Red Circle. The red circle on the display counts down the distance to the next turn using colored segments. The segments get smaller as you approach the turn. Naturally, in addition to the Circle graphic, the display also shows how many meters remain until the next turn. E-BIKE-READY Do you ride an electric bike? No problem. The ROX 4.0 EVO is compatible with many electric bike models, and connecting to an e-bike is very simple. The GPS bike computer communicates with a compatible e-bike system and displays your current assist level, battery status, lighting status, and other data on the display. BEST MEASUREMENT Need even more data or more precise values? Thanks to supported ANT+ and BLE protocols, you can connect external sensors like speed, heart rate, and cadence to the ROX 4.0 computer. DO YOU LIKE COLLECTING DATA? The SIGMA RIDE app lets you transfer your training data via BLE to your smartphone, store it, and instantly set your favorite smartphone display views. Using the LIVE feature in the SIGMA RIDE app, you can conveniently view and analyze key data and statistics in real time on your smartphone. STAY UP TO DATE Record your data on your bike computer and analyze it instantly in the LIVE preview of the SIGMA RIDE app. You can easily customize your data display while riding. BE INFORMED Smart notifications keep you connected to the outside world while you're riding. Notifications of incoming calls and messages on your smartphone will appear on the ROX computer display.