* SMART DIGITAL LED DISPLAY* : Waterproof LED temperature display. Simply touch the LED screen and the temperature of the liquid will show on the LED Display. *USB HEATING FUNCTION* : This Unique flask can be plugged in to any USB port in your car or office and will provide continuous heat to keep your favourite drinks warm all day. The flask can hold liquid heat above 42 C for up to 6 hours and liquid cooling below 10 C for up to 5 hours on its own without using the heating function! *HAND WARMING FUNCTION* : Once your favourite drink has been made, simply shake the flask gently a few times and the heat transfer will provide a long lasting hand warming function to the bottle, this will help keep your hands lovely and warm to brave the weather! *FOOD GRADE MATERIALS* : The inner wall is made of 304 grade food grade stainless steel and the outer case is made of high quality 204 stainless steel. With a food grade rubber carrying handle and Rubber base means the product is safe and sturdy. *ADVENTURE/COMMUTE/WORK* : With the state-of-the-art double-wall vacuum technology, this mug is stylish and durable. Whether you are traveling, commuting, at home, in the office or outdoor - this flask has you covered. Simply fill the flask with your favourite drink in the morning and have a hot drink on hand all day long. Due to the flasks fantastic thermal properties this will keep your drinks warm for up to 6-10 hours, need it warmer? no problem, simply plug the flask in to a USB port (cable provided) and the 5v battery will heat your flask back to perfect temperature! Want to know a little hack? Plug it in anyway while at your desk and feel as the flask gets warmer! Small and compact enough to fit into your handbag or rucksack. Always have a hot drink ready to go! This secure, string and durable flask can handle anything you throw at it and comes in a wide variety of beautiful colours. The onboard battery build into the base of the flask means an extra quality of this flask is that with one shake, the flask will transfer heat from the battery to the outer layer of the flask, meaning that this flask will keep your hands toasty and warm for the cold train ride, walks to the office or during the adventure to the great outdoors! See how warm your favourite drink is with the intelligent one touch temperature detection display. With the flasks beautiful modern design this truly is the perfect flask for home, office or commuting. Only the best materials are used for our products. This flask uses high quality stainless steel and food grade silicone. This mean you always have a hot, anti-leak and anti-slip flask everywhere you go. Simply plug the flask into a USB port with the charging cable provided and be confident in the knowledge that your drink will never get cold With the flasks high quality double insulated wall properties and high thermal retention materials this flask is the perfect companion for home, office or commuting. Product size: height 16.5 cm, width 7 cm Material: 304 stainless steel, polypropylene PP, food-grade silicone Capacity: 320ml Color includes: white, red, yellow, green,Scandinavian powder Package includes: 1pc * insulation cup