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We present the analysis of several newly obtained and archived photometricand spectroscopic datasets of the intriguing and yet poorly understood 13.5-magcentral star candidate of the bipolar planetary nebula Sh2-71. Photometricobservations confirmed the previously determined quasi-sinusoidal lightcurvewith a period of 68 days and also indicated periodic sharp brightness dips,possibly eclipses, with a period of 17.2 days. In addition, the comparisonbetween U and V lightcurves revealed that the 68-day brightness variations areaccompanied by a variable reddening effect of $\Delta E(U-V)=0.38$.Spectroscopic datasets demonstrated pronounced variations in spectral profilesof Balmer, helium and singly ionised metal lines and indicated that thesevariations occur on a time-scale of a few days. The most accurate verificationto date revealed that spectral variability is not correlated with the 68-daybrightness variations. The mean radial velocity of the observed star wasmeasured to be $\sim$26 km/s with an amplitude of $\pm$40 km/s. The spectraltype was determined to be B8V through spectral comparison with synthetic andstandard spectra. The newly proposed model for the central star candidate is aBe binary with a misaligned precessing disc.

The Central Star Candidate of the Planetary Nebula Sh2-71: Photometric and Spectroscopic Variability