  We present the results of the optical identification, classification, as well
as analysis of photometric and spectral observations of the X-ray transient
SRGe2149+6736 detected by the eROSITA telescope during SRG all-sky X-ray
survey. Photometric observations of the optical companion of SRGe2149+6736 were
carried out on 6m telescope BTA SAO RAS, 1.5m Russian-Turkish telescope RTT-150
and 2.5m telescope CMO of Moscow State University. Together with ZTF data they
showed that the source is a cataclysmic variable with an orbital period
$P=85\pm0.4$~min which demonstrates long-term brightness variability from
$23.5$~mag (low state) to $20$~mag (high state). The high-state light curves
are consistent with a model of accreting magnetic white dwarf and suggest that
SRGe2149+6736 belongs to AM~Her type variables. The optical spectra obtained in
the low state are consistent with a spectral energy distribution of a white
dwarf with a temperature of ~24000 K.
