Sourdough Starter Warmer: Precisely adjust temperature from 70°F to 100°F in 1°F increments. Ensures consistent, stable heat for optimal fermentation—even during cold weather. Maintain ideal starter temperature between 75°F and 82°F to accelerate fermentation and improve bread texture. Smart Timer & Memory Function: Features a 0–12 hour timer with auto shut-off for hands-free dough proofing. Safe, Rapid Heating: Equipped with upgraded graphene and aluminum foil heating film, plus advanced directional heating technology. Reaches target temperature in just 10 seconds. Operates at only 12W for energy efficiency and safety. For better heat retention, cover the jar with a towel. Durable & Compact Design: Unlike fragile USB-powered warmers, this model uses a standard US plug for stable power delivery and enhanced durability. Plug-and-Play Use: Suitable for sourdough starter activation, meat defrosting, butter softening, yogurt fermentation, and more—ideal for both beginners and experienced bakers. Voltage: AC 110V Plug Type: US Plug (compatible with Canada, Mexico, Philippines, Taiwan, Thailand, India, and the United States) Color: Black Material: Plastic Package Includes: 1 x Electric Sourdough Starter Warmer Mat Note: Color may vary slightly due to screen settings and lighting. Measurement tolerance: ±1–3 cm.