Based on our 5-year, long-term experience gained through installing over 17,000 LED retrofit lamps, Helecta has increased its warranty period to 4 years. Even under the most adverse conditions, such as intense heat in Cameroon or salty air along the German coastline, failure rates are still in the parts-per-thousand range, after years. And precisely that is what sets a Made in Germany product apart from cheap Asian imports.