"Simple...Stress-Free...Gorgeous" - The Kitchn Goldie by Sourhouse™ provides just enough warmth to keep a sourdough starter consistently in the “Goldilocks Zone” of 75-82ºF (~24-28ºC) where it is the most active and healthy, so bakers can bake their best bread all year round without warming up their whole house. This product includes: 1 - Goldie by Sourhouse1 - Sourhouse Cooling Puck1 - Quick start guide1 - User Manual / Tech sheet: English, Spanish, French, German, Italian, Danish, & Dutch Features: just enough heat to safely warm a starter to 75-82ºF (~24-28ºC) a small footprint with the capacity to hold up to a quart sized jar an auto-warming on/off switch a transparent, borosilicate glass cloche so bakers can see their starter from anywhere in their kitchen a simple three-zone thermometer (indicated with blue, gold, and red lights) that helps bakers understand their starter’s behavior and anticipate their time to bake a Sourhouse Cooling Puck for the occasional need to cool down a starter in a too hot room in preparation for baking. USB plug Works with any local USB-to-wall adapter (adaptor not included) operating voltage is 100~240V, 50~60Hz low energy use food safe water resistant cleans up with a moist sponge, cloth or paper towel Works with any jar that fits inside (jar not included) Certifications: FCC, California Prop 65, IC (Canada), CE - EMC & LVD, UKCA - EMC & LVD, Rohs, Reach, RCM