Garmin Edge 540 vs Sigma ROX 4.0
Comparison 2026 — Bike Computers
Our verdict
Based on our weighted scoring, the Garmin Edge 540 edges out the Sigma ROX 4.0 with an overall score of 92/100 against 76/100. It scores particularly well on features (98/100) and ease of use (86/100), making it the better all-round pick in Bike Computers.
The Sigma ROX 4.0 remains a sensible alternative if price is your main concern — it lands at €69.99 versus €299.99.
Features winner
Garmin Edge 540
28% higher than its rival
Value winner
Sigma ROX 4.0
22% better value for money
Specifications
| Specification | Garmin Edge 540 | Sigma ROX 4.0 |
|---|---|---|
| Price | €299.99 | €69.99+329% |
| Rating | ★4.5 (1,870) | ★4.2 (1,450) |
| Overall | 92/100+21% | 76/100 |
| Features | ||
| Type | GPS fietscomputer | GPS fietscomputer |
| GPS | Multi-band GNSS | GPS, GLONASS, Galileo |
| Navigation | Turn-by-turn met kaart | Tracknavigatie |
| Sensors | ANT+, Bluetooth | — |
| Display | ||
| Screen | 2.6 inch kleur+8% | 2.4 inch monochroom |
| Resolution | 246 × 322 px | — |
| Battery & connectivity | ||
| Battery life | 26 uur | — |
| Connectivity | WiFi, Bluetooth, ANT+ | — |
| Properties | ||
| Weight | 80 g | 51 g+57% |
| Waterproof rating | IPX7 | IPX7 |
| Battery | ||
| Battery life | — | 25 uur |
Pros and cons
Garmin Edge 540
Pros
- Multi-band GPS — accurate navigation even between tall buildings
- Up to 26 hours of battery life, enough for multi-day touring
- ClimbPro 2.0 shows remaining climb and gradient in real time
- Extensive training analysis with VO2 max, recovery and training load
Cons
- Significant investment — overspec'd for purely recreational riders
- Buttons instead of touchscreen: takes getting used to if you come from smartphone navigation
Sigma ROX 4.0
Pros
- Sharp price for a GPS bike computer with navigation
- 25 hours of battery life — one of the longest in its class
- Pairs with heart rate straps and speed sensors via ANT+/Bluetooth
- Simple three-button operation
Cons
- No map display — only track navigation with arrows
- Black-and-white screen, less clear than color displays