SED of the γ-ray spectrum from the IC process and the synchrotron X-ray emission produced by relativistic electrons in the nebula around the Black Widow binary system B1957+20, integrated over a region with the radius: R_Neb = 1.5 (dot-dot-dashed curve) pc, 2.5 pc (dotted), 5 pc (dashed), 10 pc (solid), and 15 pc (dot-dashed). The other parameters of the model are: σ = 0.01, the pulsar wind shock radius R_sh = 10¹⁶ cm, the power law spectrum of the electrons with the spectral index α = 2.1 between E_w = 3 TeV and E_max (given by Eq. (4)), and the minimum magnetic field strength B_min = 0.5   μG. The γ-ray spectra are produced by relativistic electrons which scatter the MBR and the infrared photons from the galactic disk.