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Sigma Sport ROX 4.0 HR Set - GPS Cycle Computer + R1 DUO HR Chest Belt + Overclamp Butler Mount - white

Sigma Sport ROX 4.0 HR Set - GPS Cycle Computer + R1 DUO HR Chest Belt + Overclamp Butler Mount - white


ROX 4.0 – GPS bike computer with altitude measurement.

The ROX 4.0 GPS bike computer supports bikers on bike tours with more than 30 functions and user-friendly controls, enabling them to focus on what is important: enjoying biking. The extra-large display reliably shows data such as altitude profile, speed, distance, and training time. The ROX 4.0 bike computer also shows navigation information and connection to an e-bike and external sensors. Track your current ride data and analyse them at any time on your smart phone.


ROX 4.0 HR Set: GPS Bike Computer + Heart Rate Belt + Overclamp Butler GPS handlebar mount

  • Heart rate transmitter R1 DUO transmits data via ANT+ and Bluetooth Smart
  • With ultra-light, comfortable, well-fitting Comfortex+ textile chest strap
  • Overclamp Butler mount for handlebars with Ø 31.8 / 35 mm including 3D rubber pads


Details of the Sigma Sport ROX 4.0 Cycling Computer

  • The 2.4-inch-diagonal high-contrast display and extra-large numbers make it easy to read, even during a ride.
  • The innovative Red Circle at the top right of the display is highlighted in colour and offers you an innovative and exciting display of your training data.
  • SEARCH & GO - the clever 1-point navigation. With "Search & Go Navigation", cyclists can quickly find any location and navigate there. To do this, they either enter an address in the SIGMA RIDE app on their smartphone or click on any point on the map. Preferences for routes (bike paths, dirt roads, roads or running and hiking trails) can be set individually. The created track can then be started directly on the ROX 4.0 or saved for later in the SIGMA RIDE app.
  • Import tracks from third parties! Cyclists can import tracks from the SIGMA DATA CENTER or from portals such as komoot and Strava via the SIGMA RIDE app and then receive visual and acoustic turn-by-turn instructions on their bike computer. The selected track can be started immediately or it can be saved on the ROX 4.0 and cycled offline at a later time. In this way, cyclists navigate their tour without having to be connected to their smartphone.
  • Everything at a glance! The SIGMA RIDE app allows you to set your display view individually. You can set up to six views, each with three values. Current speed and time are shown continuously on the display.
  • Ready to go at any time! The ROX 4.0 bike computer can be positioned directly on the handlebars in a few easy steps – entirely without cables or sensors. If you want, you can connect your Rox 4.0 to additional sensors for measuring speed, heart rate, and cadence.
  • ROX 4.0 uses barometric readings to determine inclines and declines and provide you with reliable information about altitude, allowing a precise recording of your track. You can also call up a graphical altitude profile on the ROX 4.0. The home altitude at the beginning of the tour is determined automatically from GPS, or you can set altitude manually.
  • The ROX 4.0 is e-bike-ready and can be easily connected to many e-bikes. Your GPS bike computer establishes a connection to the compatible e-bike system and shows you the current assist mode, battery status, and light and other data on the display.
  • ANT+ and BLE enable you to connect external sensors such as speed, heart rate, and cadence sensors to your ROX 4.0. You can find accessories sets with various sensors for your ROX in our shop.
  • You can use the SIGMA RIDE app to collect your training data, transfer them to your smart phone via BLE, and quickly set your favourite display views on your smart phone. The most important data and statistics can be read from your smart phone in real time with the SIGMA RIDE app’s LIVE function and assessed conveniently.
  • Smart notifications connect you to the outside world even when you’re riding. Notifications of incoming calls and messages to your smart phone appear on your display.

Features of the Sigma Sport ROX 4.0


  • Dimensions (W x L x H): 44.9 x 73.6 x 18.4 mm
  • Mount compatibility: GPS Mount & Overclamp Butler
  • Waterproof rating: IPX7
  • Battery: 550mAh (Li Ion), 3.7V
  • Transreflective color display: 2.4 inch with resolution main display: 59x23 pixels
  • Backlight
  • Typical battery life: 25 hours
  • Connectivity: ANT+, BLE
  • Smart Notifications
  • Sensor technologySensors: speed, heart rate, cadence
  • E-Bike Ready


  • Search & Go
  • My Tracks
  • Turning guidance
  • Back to starting point: Arrow navigation


  • GPS
  • Barometric altitude measurement
  • Ambient light sensor

Training functions

  • Preinstalled sport profiles: 1
  • Individually adjustable sport profiles: 1 (Further sport profiles can be saved in the app)
  • Individually adjustable training pages: up to 6
  • Individually adjustable number of training values per page: 2
  • Templates for training views: 1
  • Auto pause

Data analysis

  • Sigma Data Center
  • Sigma Ride App
  • Memory: up to 100 hours of training
  • File format: .fit

Basic functions

  • Speed
  • Average speed
  • Maximum speed
  • Distance
  • Training time (net)
  • Calories
  • Clock (12/24 hrs)

Altitude measurement

  • Current altitude
  • Gradient (in %)
  • Altitude graph
  • Altitude uphill

Cadence functions

  • Cadence
  • Average cadence
  • Maximum cadence

Heart Rate Functions

  • Current heart rate
  • Average heart rate
  • Maximum heart rate
  • Maximum heart rate (in % )
  • Intensity zones

E-bike functions

  • Range
  • E-Bike Battery
  • Human Power vs. Motor Power
  • Support level
  • Light

Status functions

  • Current temperature
  • Device battery status
  • Compass


Sigma Sport Overclamp Butler GPS Handlebar Mount

The Overclamp Butler enables you to perfectly align your ROX 4.0 bike computer, even if you have a short stem. The computer head can thus be positioned centrally above the stem at the level of the handlebars. This ensures that there is space and order on your handlebars and that you have a good overview of all values, even if you’re not riding a mountain bike. The Butler fits on handlebars of 31.8 and 35 mm diameters.

Fact Sheet of Sigma Sport ROX 4.0 HR Set - GPS Cycle Computer + R1 DUO HR Chest Belt + Overclamp Butler Mount - white

Product Name: Sigma Sport ROX 4.0 HR Set - GPS Cycle Computer + R1 DUO HR Chest Belt + Overclamp Butler Mount - white
Manufacturer: Sigma Sport
Item Code: SIG532371
activity: Cycling
material: Composite
dimensions (l/w/h): 74/45/19mm
voltage: 3.7V
number of functions: 30
transmission standard: ANT+, Bluetooth, USB
expandable memory: no
Battery Type: integrated Battery
device functions: Altitude, PC-/App-Analysis, GPS, Navigation, HRM included, Cadence (optional or included), Calorie Consumption, Temperature, Smart Notifications, E-Bike Display, Cycle Computer, Speed Sensor Bike (optional or included)
device version: Bike Computer
compass type: electronical
Display Features: Monochrome, without Map Display
display size (diagonal): 2.4"
Model year: 2023
Collection: Full year
Color: White
weight: 51g
manufacturer item code: 01062
Manufacturer page: