What level is a water droplet Angle of 115°? How long does it take to wear out?

A: A water droplet Angle of 115° is considered excellent. Reference for the water drop Angle of the oleophobic layer: ① No oleophobic layer: 30-60°, severe fingerprint adhesion; ② Common hydrophobic layer: 90-100°; ③ High-quality hydrophobic layer: above 110°; ④ Above 115° : Excellent. Woowhead Guanfudun has a water droplet Angle of 115° (self-tested by the brand laboratory), with less fingerprint residue and smooth sliding. The oleophobic layer is a consumable, and its wear rate depends on usage habits: ① Bare hand use + frequent wiping: It begins to decline after 6 to 12 months; ② With shell + less friction: 12-18 months; ③ If frequently exposed to alcohol/cleaning agents (which can dissolve the oleophobic layer) : It may become ineffective within 3 to 6 months. The wear resistance cycle is a more crucial durability indicator - Guanfudun's wear resistance cycle is 10,000 times (tested in the brand laboratory), while that of ordinary films is about 3,000 times, which means that the durability of the oleophobic layer is approximately three times that of ordinary films. It is recommended not to frequently wipe the membrane surface with alcohol. Just dry wipe it with a microfiber cloth. A 1-piece package costs 129 yuan, and a 2-piece package costs 159 yuan. It can be used as a spare replacement.