This property defines the Unicodes which belongs to Small Kana Extended block
Characters like 𛄲,𛅐,𛅑, etc. are listed under Small Kana Extended Block.
14 Characters are present in Small Kana Extended Block starting with the Unicode point U+1B132 that represents the character 𛄲.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.