The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. hero-video Merchant Video Enjoy the fun of constant temperature coffee Built in 5-10 hours battery，Smart self heating coffee mug，Touch control+APP control ，Upgrade mobile wireless charging Please note: That coffee mugs can only be used with LEGARDLILIU brand chargers and Docking Coasters. Other chargers may cause the coffee cup to fail to charge. It only takes three steps First Use,Please Connect Consistent Docking Coaster Charge the Mug,Meanwhile Activate APP control. After Charging.Tap Button Turn on Mugs ,Adjust the Temperature You Want Start Enjoying Coffee at a Constant Temperature. Press Button for 1Second Display OFF,You can Hand washing. LEGARDLILIU coffee cups is the best choice for girlfriend, friend, father, mother, grandpa and grandma. It can be used as birthday gift, holiday gift and Season of graduation gift,Christmas gifts and anniversary gifts.