NGC1647 is a poorly studied open cluster, with considerable discrepancies in age reported in previous works. To improve the precision of its characterization, we applied HDBSCAN clustering in astrometric space, complemented by radial-velocity filtering, and identified 271 high-confidence cluster members. I will show as isochrone fitting to extinction-corrected photometry can provide a preliminary cluster age range. From TESS and K2 time-series photometry, we identified 95 periodic variables, including nine p-mode pulsators. By fitting stellar evolutionary models to these p-mode pulsators, we derived "asteroseismic" cluster parameters, Age and Metallicity. The seismic metallicity is consistent with spectroscopic estimates, while the derived age exhibits significantly higher precision than traditional isochrone-based results. Moreover, we analyzed LAMOST spectra using the ROTFIT tool and performed SED fitting to determine cluster extinction and conduct gyrochronology studies. This combined approach provides a refined benchmark for the fundamental parameters of NGC1647.