Very good luminous power maintenance: 90 % over the entire service life of the lamp Important NOTE: Energy -saving lamps & fluorescent lamps do not belong in household waste. The manufacturers are obliged to take out used energy -saving lamps. Therefore, release your energy -saving lamps at a special waste assembly point. If you buy several items, please only initiate the eBay purchase processing after the last purchase. Be sure to complete the purchase processing via Ebay. Without this step we do not receive a confirmed delivery address from you and cannot send your goods. We immediately send after order input - 5 days a week. Our logistics partners are DHL and GLS (bulky goods). With every order you will receive a tracking number to track your order. You only pay 1 x shipping r.