Based on this product's specifications, here are some alternatives and similar models
Battery Varta 430 101 111 Zinc Chloride
Summary description:
The Varta 430 101 111 Zinc Chloride battery offers reliable 6V power with a compact design. Measuring 67mm in width, 67mm in depth, and 115mm in height, it is ideal for various applications. This single battery provides consistent performance, making it a practical choice for devices requiring a dependable energy source.