Interested in reviews of Sigma ROX 4.0 SENSOR SET black/white? It got 4.3 out of 5 stars from our customers. Find specific customer reviews of Sigma ROX 4.0 SENSOR SET black/white below. We will appreciate if you also share your experiences with Sigma ROX 4.0 SENSOR SET black/white after purchasing.
Rated 23/06/2025, variant Sigma ROX 4.0 SENSOR SET black/white
Verified purchase
They are not
Always some problems
After installing the firmware upgrade, it keeps disconnecting from the app on the mobile
He'll figure out the distance traveled. I stopped for a 20 minute break and while the bike was stationary 90 km were added to the computer. This increased the average speed to 40 km per hour. To electric boilers in Beskydy!
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Michal, Kladno
Rated 12/06/2025, variant Sigma ROX 4.0 SENSOR SET black/white
Verified purchase
maps.cz
diet compatibility
usb-c charging
Heart rate works well
sensors are problematic
gps takes away distance, which then changes the diameter - however the speed sensor is connected
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Miroslav, Frýdlant nad Ostravicí
Rated 03/11/2023, variant Sigma ROX 4.0 SENSOR SET black/white
Verified purchase - review from a price comparison website
I've only had Rox 4 for a short time
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Miroslav, Praha 4 - Krč
Rated 20/05/2022, variant Sigma ROX 4.0 SENSOR SET black/white
Verified purchase
Everything works on the first connection
Czech lags a bit (hooks, commas)
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Pavel, Hluboka nad Vltavou
Rated 27/08/2024, variant Sigma ROX 4.0 SENSOR SET black
Verified purchase
I bought the navigation twice in a row. For the first time he had to update everything to the latest software, which wouldn't have mattered, he changed the batteries, "according to APP they had 100% which didn't match", he steamed, deleted, steamed again, reinstalled, but the sensors randomly disconnected during the ride and didn't connect back. Even if the computer has plotted the route on the map for about 40km, after disconnecting the speed sensor for 8km you drive without knowing the distance and speed, the total distance of the route is calculated to be 8km after saving the activity, etc. Cannot combine with GPS for sensor drop. There is no service support in CZ, the DE representation does not address anything, they do not have the interest to communicate, probably the employees do not want to react to the specific described malfunction of the device, which they must know about. The second device was newer, no need to update, but despite all the combinations with the app etc. Still not working. I returned it to the seller and bought a competitor, yes for 2x the price. I do not recommend the product in combination with cidly. The computer itself for less than 2 tons. KC can serve to satisfaction without much effort.
Low price
Small size
The device itself can be OK, in combination with more sensors it is not functional
Possibility to download the route from map.cz
Repeatedly disconnecting external sensors from the computer
Cadence and speed response delay of about 2-3s
The navigation display is fine, in case of more branches you don't know where to go
According to the GPS route tracking, you sometimes drive through water, probably the signal is dropping out, there are no more GPS communication combinations.
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Pavel, Hradec Králové
Rated 03/08/2024, variant Sigma ROX 4.0 SENSOR SET black
Verified purchase
the tachometer as such is great
the sensors are useless, the batteries drain very quickly, the speed sensor is fixed and the cadence sensor has an inappropriate shape, it is difficult to clamp it on the crank.
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