- Excellent insulation: double-layer stainless steel vacuum helps keep hot drinks warm for up to 10 hours and cold drinks cool for up to 16 hours. To maintain insulation performance, avoid impact and do not use a dishwasher. - Leak-proof and practical: a heat-resistant silicone sealing ring provides a tight seal, so it does not leak even when tipped. The lever allows one-handed pouring, and the U-shaped spout helps prevent splashing. Capacity: 1.5 L. - Tea filter and non-slip base: includes a removable tea filter that completely catches tea leaves. The non-slip silicone base adds stability to prevent tipping. Ideal for office or home use. - Specifications and notes: made of high-quality 304 stainless steel for safety and durability. The lid is polypropylene (PP) with a waterproof silicone ring and is 100% BPA-free. The lid features a touch display that shows the indoor temperature.The battery is not removable and has an approximate service life of three years under normal conditions.