Based on this product's specifications, here are some alternatives and similar models
Hand strap for SUNMI L2s / L2s Pro / L2H handheld devices — model C20000026
Summary description:
Replacement hand strap compatible with SUNMI handheld devices L2s, L2s Pro and L2H (MPN C20000026). Provides secure single-hand grip for scanning and mobile POS tasks, helping reduce drops and improve comfort during extended use. Easy to attach to the device mounting points and suitable for retail, warehousing, logistics and field service applications.