This screen guard features a high-quality, multi-layered design for optimal protection. It includes a High Transmission TPU Layer, sandwiched between removable front and back protection film layers. The screen protector is composed of 5 distinct layers, including a black side (Layer 1) and a blue side (Layer 2), with adhesive on one side for secure application. For best results, ensure the screen surface is thoroughly cleaned before application. Cleaning wipes (wet and dry) are included to facilitate this process. It is advisable to seek expert assistance if you are unfamiliar with screen guard installation. This screen guard is suitable for smartwatches.