Based on this product's specifications, here are some alternatives and similar models
Single-use battery Ansmann Blister 6 X Zinc - Air PR 312
Summary description:
The Ansmann Blister 6 X Zinc - Air PR 312 is a reliable single-use battery with a voltage of 1.4 V. This pack includes 6 batteries, suitable for various devices. Compatible with types DA312, AC312, PR312H, ZA 312, HA312, V312A, and 5013233. Ideal for hearing aids and other low-drain devices, offering long-lasting performance and convenience.