Reviews over the

4iiii Ultegra R8100 Precision 3+

Very positive after first installation, but did immediately notice that the cover where you insert the battery only tightens very slightly. After 1 month the first problems, signal dropped out. Opening the cover and pressing the battery down tightly solved the problem, but it was not practical. After first rain, water near the battery a rusting causing it to stop working. For warranty to Mantel who only replaced the battery. Do not expect this to solve the problem. Despite other reviews here being positive, this problem is reported more on other forums. If you don't drive in the rain it might not be as much of a problem but I would advise against this gauge.

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