  The multi-color photometric and spectroscopic observations of the newly
discovered eclipsing binary T-Lyr0-08070 were obtained. The resultant light and
radial velocities were analysed and the absolute parameters of the components
were determined. The system is composed of an F3 and an M3 main-sequence stars.
Masses and radii were estimated to be 1.37$\pm$0.23 M$_{\odot}$ and
1.60$\pm$0.09 R$_{\odot}$ for the primary and 0.32$\pm$0.04 M$_{\odot}$ and
0.86$\pm$0.06R$_{\odot}$ for the secondary star. The less massive secondary
component has a radius at least two times larger with respect to its mass.
Using the BVJHK magnitudes of the system we estimated an interstellar reddening
of 0.22 mag and a distance to the system as 479$\pm$36 pc.
