- Stainless Steel Construction: This electric coffee percolator features all-stainless steel interior components, completely free from aluminum, ensuring your coffee remains pure, free from metallic aftertaste, and provides a healthy, safe drinking experience. It is also durable and easy to clean. - Large Capacity & Glass Knob Top: The 1.8-liter large capacity brews up to 12 cups of coffee at once (1 cup ? 150ml / 5 oz), perfect for family gatherings or office use. The unique, heat-resistant borosilicate glass viewing knobs allow you to clearly monitor the brewing progress and capture the perfect extraction moment. - Cordless Serving & Classic Design: Features a detachable power cord, allowing you to easily move the coffee pot to the dining table or any serving area after brewing for true cordless serving. The classic coffee pot design is both practical and elegant, adding a touch of vintage charm to your kitchen. - Dual-Light Indicator & Keep Warm Function: Equipped with an intuitive indicator light: red light signals brewing in progress, while green light indicates the keep warm mode is active. With a simple On/Off switch, it automatically transitions to keep warm mode after brewing is complete, maintaining your coffee at the ideal serving temperature. - TIPS: Start with room temperature or cool water for proper brewing. Fill water above the minimum marking line. Coarse Grounds are Recommended. Product description Is the glass knob durable? Is the interior stainless steel? How does percolated coffee taste compared to drip coffee? Does it have a keep-warm function? How do you know when it's done? Is the glass knob durable? Yes. It's made of heat resistant, broken resistant glass for safe brewing visibility. Is the interior stainless steel? Yes. The entire interior is 100% stainless steel, with no aluminum or plastic in contact with coffee. How does percolated coffee taste compared to drip coffee? It has a richer, stronger, and more robust flavor because the cycling brewing process extracts more oils and essence from the grounds. Does it have a keep-warm function? Yes. It automatically switches to keep-warm mode after brewing and has dry-boil protection for safety. How do you know when it's done? A red light means it's brewing. A green light means your coffee is ready and it's in keep-warm mode.