SIGMA ROX 4.0 – GPS Bike Computer with Navigation & Altitude Measurement

The SIGMA ROX 4.0 is a feature‑rich bike computer designed for cyclists who want GPS tracking, altitude measurement, navigation support and sensor connectivity in a compact unit. :contentReference[oaicite:1]{index=1}

Features

• GPS & GLONASS support: Uses satellite positioning to track rides, plus integrated barometric altitude sensor for accurate elevation data. :contentReference[oaicite:2]{index=2}
• Navigation / Track support: Includes “Search & Go” (navigate to an address or point via the companion app), turn‑by‑turn directions and rerouting if you deviate from a planned route. :contentReference[oaicite:3]{index=3}
• Large contrast display: 2.4″ transflective screen (approx.) with extra‑large numbers, designed for good readability even in bright outdoor conditions. :contentReference[oaicite:4]{index=4}
• Sensor connectivity: ANT+ and Bluetooth BLE support for external sensors (cadence, speed, heart‑rate) and e‑bike compatibility (display of assist mode, battery status). :contentReference[oaicite:5]{index=5}
• E‑bike ready: Works with many e‑bike systems so you can view assist level, battery status and more on the ROX 4.0. :contentReference[oaicite:6]{index=6}
• Compact & lightweight build: Dimensions approx 44.9 × 73.6 × 18.4 mm, weight ~51 g, and water‑resistant to IPX7. :contentReference[oaicite:7]{index=7}

Benefits

• Accurate altitude and ride‑data thanks to the barometric sensor — ideal for climbs, trails and serious training.
• Navigation features help you go beyond simple ride logging — useful for touring, gravel rides or exploring new routes.
• Sensor and e‑bike compatibility extend the utility beyond a basic bike computer — great if you are adding cadence/heart sensors or riding e‑bike.
• Good readability and compact mounting make it a practical choice for handlebar setup without cluttering your cockpit.

Package Contents (typical): SIGMA ROX 4.0 unit, handlebar/over‑stem mount (GPS mount or Overclamp Butler), USB‑C cable, documentation. :contentReference[oaicite:8]{index=8}

Technical Specifications

• Dimensions: 44.9 × 73.6 × 18.4 mm. :contentReference[oaicite:9]{index=9}
• Weight: ~51 g. :contentReference[oaicite:10]{index=10}
• Display: 2.4″ approx (transflective), main display resolution approx. 59×23 pixels (for data display). :contentReference[oaicite:11]{index=11}
• Battery: 550 mAh Li‑ion (~3.7 V) providing up to ~25 hours typical use (or up to ~41 hours in the “Endurance” variant). :contentReference[oaicite:12]{index=12}
• Water resistance: IPX7. :contentReference[oaicite:13]{index=13}
• Satellite systems: GPS + GLONASS. :contentReference[oaicite:14]{index=14}

Keywords

SIGMA ROX 4.0, GPS bike computer, e‑bike ready bike computer, altitude measurement cycling computer, ANT+ Bluetooth bike computer, cycling GPS navigation.