How to tell if it's genuine?

A: Woowhead genuine products have multiple anti-counterfeiting guarantees: Purchase channels: Recognize officially authorized stores on platforms such as JD.com, Taobao, Douyin, Xiaohongshu, Pinduoduo, and wechat stores. Packaging identification: Complete brand packaging, clear printing, and complete accessories (dust collection box, alcohol bag, dry cloth, dust collection sticker, circular polarized light detection card, instruction manual). Micro-light hidden engraving identity anti-counterfeiting label: After applying the film and turning off the screen, when observing the lower left corner of the screen at a specific Angle in ambient light, the exclusive brand mark can be seen. When the screen is on, it is nearly invisible and does not affect the display. Circular polarized light detection card: Genuine products come with a dedicated detection card in each box. After applying the film and rotating the detection card for observation, the true circular polarized light picture remains uniform and soft. Price reference: 129 yuan for 1 piece, 159 yuan for 2 pieces. Those priced much lower than this may be counterfeits