40 watt 240 volt lava lamp bulb. also fitted to the astro lamp.
Mathmos lava lamp bulb 30 watt fits telstar-jet-astro baby lamps E14 SES
Mathmos lava lamp halogen GU10 bulb 35 watt fits astro lamps
MATHMOS Lava Lamp Violet Red - The Original Astro Baby
LumiGo 25W Replacement Reflector Bulb for Lava Lamp Bulb 230V, 25W Oven Bulbs, R39 E14 SES Halogen Spotlight Bulb, 2700K Warm White, Dimmable, 2 Pack
SCNNC R39 E14 Lava Lamp Bulb 230V 3 0 W Dimmable, SES E14 Reflector Spot Light Bulb Warm White 2700K, Replacement Lava Lamp Bulb E14 R39 Reflector Bulb for Lava Lamp Bubble Glitter Lamp, Pack of 2
Lava Lamp Bulb R39 30W, E14 Small Edison Screw Replacement Bulbs for Lava Lamps, Dimmable Spot Reflector Bulbs, Warm White 2700K, 4Pack
