「China Plug」Bear | Multi-functional Small Glass Health Pot

Very useful.

After using it for two weeks, it's been pretty good. The buttons for setting options and temperatures are a bit unresponsive and require pressing repeatedly, which isn't very user-friendly. The boiling sound is around 63db and isn't too loud. It's completely silent when keeping warm, unlike the noise of a continuous fan on an electric ceramic stove. The 1-liter kettle is quite small, slightly bigger than a phone, and if you fill it too much, you worry about it overflowing when boiling. It really needs to be at least 1.2 liters. When it boils, it automatically switches to keep warm for 12 hours. It only stops boiling to avoid dry burning when there's about one cup (250ml) left, so you can't concentrate it further. The lid is tight and secure. The glass is super thin, so you have to be careful not to break it, even using a cloth on the table. Overall, it's a high-quality product from Bear, even though it's on the pricier side.