★Safe to drink: Our teapot is 100% PTFE-free, BPA-free, and food grade SUS304 stainless steel for greater rust and corrosion resistance. ★Safe use: Automatically whistle when boiled, bringing you and your family safe. Thicken the pot to make it more durable and stronger. ★Features: The bottom of the multi-layer capsule has high thermal conductivity, which can shorten the boiling time and prolong the service life. ★Suitable for all kinds of stoves: electric stove, gas stove, electric ceramic stove, induction cooker, halogen furnace. ★ Note: Do not boil water on a large stove. Turning on the fire will make the teapot too hot to handle. We still recommend boiling the water on a small fire.