This USB powered coffee mug warmers features three adjustable temperature settings to preserve your beverage ' s ideal warmth while maintaining stable heating through its anti slip surfaces design Securely place your cup on its nonslip heating zone during desk work, bedtime reading, or hotel stays – maintaining consistent warmth for beverages without occupying excessive space Engineered with ABS and enhancements including overheat protections an 8 hour auto shutoff function, the compact beverage warmer displays real time a clear LED interfaces for operations Present for coffee / tea lovers, this versatile cup warmer combines practical functionality with portability, ensuring thoughtful convenience for daily use or special occasions Perfect for workers, home users, and travel enthusiasts seeking to enjoy hot coffee, tea, or milk across ceramic mugs, stainless steel tumblers, and glass containers without temperature compromises