Based on this product's specifications, here are some alternatives and similar models
Spigen Pixel Watch 3 Case Black TPU 45mm
Summary description:
The Spigen Pixel Watch 3 Case is made of durable thermoplastic polyurethane (TPU) and designed for Google Pixel Watch 3 (45mm). It weighs only 3g, ensuring lightweight protection without adding bulk. The sleek black color complements the watch's design while providing essential protection against scratches and minor impacts. Ideal for everyday use, this case is a perfect blend of style and functionality.