Umbra is a wall & ceiling lamp hand-made from mouth-blown lead-free crystal.‎ Therefore any small bubbles, non-melts and ir-regularities in the glass are both proof and a characteristic feature of this traditional craft.‎Light source: LED e27, max.‎ 13 wBulb included:1x e27, g45 led, 3w, 290 lm, 2700k, ra90+, dimmableDimming:dimmable with triac ; on demand dimmable with dali, rf/wifi, for information on dimming with other systems please contact your bomma partner.‎Inspired by the relationship between geometric objects and their shadows, the Umbra collection features elegant pendants in sophisticated detail.‎ Its metal plate derives from the perfectly elliptical shadow cast by a side-lit ball, mirroring the colorful mouth-blown crystal piece.‎