Color: look at the picture Material: 1. Internal 304 stainless steel 2. External 201 stainless steel Size: 22.5 × 6.5 × 6.5cm Capacity: 500 ml Battery capacity: 1100mA (6 months can be used, the battery cannot be replaced) Package Included: 1 × insulation cup Size chart: Suitable For Easy Travel, Suitable For Outdoor Sports, Office, Beach, School, Picnic, Hot Yoga, Hiking, Camping, Cycling, Running, Walking, Gym, Fitness, Etc. 360 - Rotation Does Not Have To Worry About Leakage, The Seal Is Very Good. Our Products Keep The Liquid Heating At 42 ° C For 6 Hours, And The Liquid Lasts For 5 Hours Below 10 ° C. This Is Longer Than Other Vacuum Bottles.(After 24 Hours In The Water At 100 ° C, The Temperature Remains About 40 ° C). Display Through LCD To Prompt Real -time Water Temperature Through Contact. Fashionable Mirrors, Through Touching The LED Screen, The Internal Temperature Of The Liquid Is Easy To Understand. You Don't Have To Test The Temperature And Avoid Burning. 304 Stainless Steel, . The Lasting Insulation Material: The Vacuum Of The Cup Will Hinder Heat Transfer.