The shape and color must be considered when buying this lamp because she herself has a white continuous frame. In gold or silver-colored lamps, the lamp LED works differently (awful) than when used with a white (even looks better than with glass). It works extremely stable and firm, unlike our old LED bulbs, as they not only made of glass and a high plastic content has.
The light is a bright and pleasant, with a slight yellowish glow that not so artificially acts like other LED lamps. The brightness is very strong and purposeful. The 4,0W completely enough, even though I can not say whether they really replace 20W.
Priced it differs little from others and the durability can unfortunately often assessed only when the lamp no longer is already on the market (when the manufacturer's instructions are fairly reliable), but a general problem of LED lamps through the long life ( is also when replacing).
Conclusion: Good LED lamp which mainly by the white frame which seems a bit too easy, different and spread a pleasant brightness. The price, however, is convincing.