About this item ✅ All Day Battery Life. 14,400 MAH battery will keep your coffee at the perfect temperature with a 10 hour battery life! ✅ Ultra-Fast Heating technology. Can heat cold water in less than 10 minutes. Competitors have low power heating elements that can take over an hour to heat cold water. Our heating technology is superior as it keeps your drink at the exact temperature you specify, and heats super fast! ✅ Power Bank. You can use the Smrtmugg as an external power supply to charge your phone, tablet, or computer on the go. No need to bring additional batteries when the Smrtmugg has such a large battery built in. ✅ Double wall, Vacuum insulated Travel Mug. Will keep your drink hot or cold for a long time. Great for tea, or instant coffee. Just bring the Smrtmugg when you travel or go hiking. It's the perfect product for making tea or coffee on the go! Also great for heating water or milk while traveling. ✅ Excellent Gift Idea. The perfect gift for the coffee-lover in your life. ☕ Operating Instructions: Hold power button on the right side to turn on. If this doesn't work, the SmrtMugg may be in hibernation mode, just click power button 3 times in a row quickly to exit. Once powered on, you can immediately click and hold the settings button on the left to adjust temperature. Or just power the mug on and it will resume the temperature you used previously. When SmrtMugg is already on and you want to adjust the temperature, then hold the settings button on the left side. › See more product details