Act as a product designer with 10 years of experience in kitchen appliances. Design a sleek, modern automated sake warmer with customizable temperature settings for optimal flavor. The device should feature [MATERIAL: brushed stainless steel or matte black ceramic], [TEMPERATURE RANGE: 30°C to 60°C in 5°C increments], and [SMART FEATURES: Bluetooth connectivity for app control or touch-sensitive LED display]. Include subtle Japanese-inspired aesthetics like [DESIGN ELEMENT: minimalist kanji engraving or bamboo accents]. Ensure the product is compact, energy-efficient, and includes a [SAFETY FEATURE: auto-shutoff after 30 minutes]. Render the design in a high-end kitchen setting with soft lighting to highlight its premium feel.