I used the ember and enjoyed it for a while barring the annoying Bluetooth issues. One day to my horror I discovered that the black coating within the mug had g

I used the ember and enjoyed it for a while barring the annoying Bluetooth issues. One day to my horror I discovered that the black coating within the mug had gradually worn away and noticed swirls of paint in my coffee.. I drink out of a ceramic lined metallic double walled insulated travel mug since then.