Review on Premium 6-Pack Screen Protector for Apple Watch Series 6//5/4/SE 44mm - Full Coverage HD Ultra Bubble-Free Anti-Scratch High Sensitivity Flexible TPU Protective Cover Film for iWatch 6/5/4/SE 44mm by Brian Schultz

The video made the installation process smoother even though I had to use two applications. However, the protective film started blistering a week after installation. photos attached. Due to the bubble formation, the protective film can not be dustproof and tight. The malfunction may also be related to the watch strap I have chosen. I recommend reducing the screen protector to 42mm or 43mm if you wear thick watch straps.