Premium 500ml Double-Wall Stainless Steel Smart Flask with Digital Temperature Display
Vacuum-insulated 18/8 stainless steel construction ensures 24-hour hot/cold retention, BPA-free for safe drinking. Built-in LED temperature display shows real-time liquid temp (℃/℉ switchable) with one-touch activation, eliminating guesswork. Military-grade drop resistance and sweat-proof exterior finish, featuring a leak-proof threaded lid with silicone gasket. Ergonomic curved design fits car cup holders, ideal for offices, gyms, hiking, or as a corporate gift. Patented copper layer between walls enhances thermal efficiency, compatible with hand-washing only for longevity. Includes USB-rechargeable battery (6-month lifespan) and comes in minimalist gift-ready packaging.