Environmentally friendly and safe materials: seamless stamping and stretch molding process, seamless inner tank, anti-clogging, prevents bacterial growth, safe, hygienic and easy to clean. The inner liner is made of food grade 304 stainless steel and the outer layer is made of PP, which helps prevent scratches and protects users from burns. Boil quickly: one-button switch, press to activate boiling water mode after power on, takes approximately 4-5 minutes to boil, intelligent temperature control with automatic shut-off, reduces standby time and saves energy. Portable and lightweight: heated travel mug dimensions: 105 x 105 x 240mm. 400ml capacity ideal for personal use, compact and portable, can be carried in a backpack without leakage, allowing you to enjoy hot water, tea, coffee or prepare baby formula anytime, anywhere. Safety: double-layer anti-scald design ensures the exterior remains cool while the interior stays warm, providing safe heat insulation; poured water is not hot to the touch and heat retention performance is reliable. Lid can be closed during boiling, enhancing anti-spill protection and preventing foreign objects from entering during operation. 3-in-1 function: combines kettle, thermos and drinking cup. Boil water and drink healthy hot water conveniently on the go. A great gift choice for those who enjoy hot beverages or for mothers needing hot water for baby formula.