2x Socket Adapter E14 to MR16 GU5.3 GU4 G4 for LED or Halogen Light Bulb : Amazon.de: Lighting
AGOTD GU4 MR11 LED Bulbs, 3 W 12 V Warm White Reflector LED Spotlight Replaces 20 W 30 W 36 W Halogen Bulbs, 300 LM 3000 K 38 Degree Reflector Lamp, Not Dimmable, Pack of 2 : Amazon.de: Lighting