I don't understand the negative comments. Apparently people don't know how polarizers work. You have to rotate them to remove unwanted reflections. I tested this by turning it on on a relatively expensive polarizer from my DSLR. As you can see it turned black as it should. This is evidence of effective polarization. Not bad for the tiny amount charged.
SAMSUNG Galaxy Watch Active2 (Aqua Black, R820-44mm) π± with Bluetooth, Silicon Strap, and Aluminum Bezel - International
248 Review
Global Version HUAWEI Band 6 Fitness Tracker Smartwatch for Men and Women, 1.47ββ AMOLED Color Screen, All-Day SpO2 and Heart Rate Monitoring, 2-Week Battery Life, 5ATM Waterproof - Orange
190 Review
Black Audio-Technica ATH-M50X Professional Grade Studio Monitor Headphones with Detachable Cable - Critically Acclaimed
200 Review
Sennheiser HD280PRO: π§ Next-Generation Pro Audio Headphones
260 Review