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We present the first quantitative UV spectroscopic analysis of resolved OBstars in IC1613. Because of its alleged very low metallicity (<~1/10 Zo, fromHII regions), studies in this Local Group dwarf galaxy could become asignificant step forward from the SMC towards the extremely metal-poor massivestars of the early Universe. We present HST-COS data covering the~1150-1800{\AA} wavelength range with resolution R~2500. We find that thetargets do exhibit wind features, and these are similar in strength to SMCstars. Wind terminal velocities were derived from the observed PCygni profileswith the SEI method. The vinf-Z relationship has been revisited. The terminalvelocity of IC1613 O-stars is clearly lower than Milky Way counterparts, butthere is no clear difference between IC1613 and SMC or LMC analogue stars. Wefind no clear segregation with host galaxy in the terminal velocities ofB-supergiants, nor in the vinf/vesc ratio of the whole OB star sample in any ofthe studied galaxies. Finally, we present first evidence that the Fe-abundanceof IC1613 OB stars is similar to the SMC, in agreement with previous results onred supergiants. With the confirmed ~1/10 solar oxygen abundances ofB-supergiants, our results indicate that IC1613's [alpha/Fe] ratio issub-solar.

Winds of low-metallicity OB-type stars: HST-COS spectroscopy in IC1613