The strap is made with oil edge technology. Cracks will appear after long-term wear, but they do not affect normal use.
For your reference, here are more details about cracks on the strap of the Xiaomi Smart Band 10 Ceramic Edition:
1. Over time, repeated bending, stretching, or twisting of the strap can cause the material to weaken and crack;
2. Exposure to sweat, UV light, moisture, or extreme temperatures can degrade the strap material, leading to brittleness and cracking;
3. Pulling, bending excessively, or improper installation/removal of the strap can stress the material and cause damage;
4. Contact with oils, lotions, detergents, or alcohol-based products can deteriorate the strap’s surface and structure;
5. Natural aging of the material can cause loss of elasticity and lead to surface cracks.