Phonological and morphological characteristics
* Vowel a for Old Church Slavonic ѫ (yus), ь and ъ: ''маж'' vs. formal Bulgarian ''мъж'' (man), ''сан'' vs. formal Bulgarian ''сън'' (sleep). * Limited number of o reflexes of Old Church Slavonic ъ in the suffix ''-ък'', the prefixes ''въз'' and ''съ'' and the prepositions ''във'', ''въз'' and ''със'': ''сос него'' vs. Standard Bulgarian ''със него'' (with him), ''напредок'' vs. Standard Bulgarian ''напредък'' (progress). * Limited number of u reflexes of yus: ''мука'' vs. Standard Bulgarian ''мъка'' (sorrow) * Schwa () for Old Church Slavonic лъ/ль before non-labial consonants and u before labial consonants (as in the Ihtiman dialect): ''съза'' vs. formal Bulgarian ''сълза'' (tear), ''вуна'' vs. formal Bulgarian ''вълна'' (wool) * щ/жд (/) for Proto-Slavic / (as in Standard Bulgarian) - ''леща, между'' (lentils, between). The reflex in sevеral villages and partially in the town of Samokov is, however, шч , i.e. ''лешча'' * Presence of soft consonants at the end of the word * Single masculine definite article -o: ''гар'бо'' vs. Standard Bulgarian ''гър'бът'' (the back). * Ending -м in verbs of all conjugations (as in the Sofia dialect): ''че'тем'' vs. formal Bulgarian ''чет'ъ'' (I read) For other phonological and morphological characteristics typical for all Southwestern dialects, cf. Southwestern Bulgarian dialects.Sources
Стойков, Стойко: Българска диалектология, Акад. изд. "Проф. Марин Дринов", 200