Reddit reviews Flyteeth 300ml Self Stirring Coffee Mug- Intelligent Automatic Temperature Control Waterproof Hot Energy Stirring Innovative Coffee Cup Automatic Mixing Cup，white (White) (White)

Intelligent design: No battery, no buttons to operate.Just pour hot water into this cup, it will automatically stir with PTFE rotor and cool down your beverage from hot to warm within 3 minutes; And it will automatically stops then unless more hot water poured in.Material: Made of food grade 304 stainless steel and silicone, safe and durable. It is waterproof and maintenancce-free, easy to wash.Excellent workmanship: One-piece molding, non-porous liner, no seams, no water leakage, no need to worry about high temperature.Convience: Lightweight and portable; You can enjoy your coffee at home, in the office and during your travel.Ideal gift: to your parents, friends, colleagues and yourself.