Brewing to taste: This siphon coffee maker allows you to adjust the temperature and the coffeetowater ratio to make every cup match your preferences. Durable, lead glass: Made from lead glass rated to withstand 30C to 190C, built to last without cracking and with safety in mind. Efficient halogen heating: Has a thermal efficiency halogen lamp heater and a microcrystalline panel for rapid heat transfer, plus a protective net for safe handling and heat dissipation. Innovative vacuum brewing: Utilizes vacuum siphon technology to extract the full flavor and aroma from your coffee grounds. Use scenario: Morning routine with precise control — set your preferred temperature and ratio to consistently brew your ideal cup. Use scenario: Social or small gatherings — production of multiple cups with consistent flavor and aroma through the vacuum brewing process. Use scenario: Flavor exploration — adjust heat and ratio to experiment with different profiles and discover tastes.