The spectrum of VFTS 402 (WN7(h) + OB) shows the characteristic of a SB2. The temperature is based on the lines He i λ4471, N iii λ4634/4640, and N iv λ4058. Ṁ is based on He ii λ4686 and H_α. The fit quality is very poor as result of the secondary. The He mass fraction is between 85.0 and 92.5%. The optical photometry is contaminated by nearby stars which results in an unusually low R_V = 0.85.