Review on VSITOO S3 Pro App Controlled Smart Mug Warmer with Double Vacuum Insulation - 14oz, IPX7 Waterproof, Sliding Lid, 4-Hr Battery Life by Reynaldo Tong

Seemed like the perfect mug to keep your tea hot for over an hour but unfortunately it worked after two weeks of daily use no longer. use. I have a feeling that the cup is not really waterproof. When the mug was placed on the charging saucer, I noticed a pool of rusty water under the power button. Update: I changed my rating from one star to five stars due to Vsitoo's excellent customer service. Visitoo really stands behind their product. Their support team contacted me immediately asking for details on the issue I was having with the mug. I am told that this particular issue has been identified and resolved by their engineering team. A few days later I received a new mug.