ABSTRACTObjective:To describe the elaboration and content validity stages of a digital educational technology for nursing professionals about Japanese bathtub (ofurô) in newborns in neonatal care units.Method:A methodological study conducted between August 2019 and July 2021, in a public maternity hospital in Manaus, Amazonas, developed in two stages. In the first, the e-book images, text and editing were produced. In the second, material content validity was carried out, through the opinion of 15 expert judges, nurses and neonatal care experts. In data analysis, the percentage of agreement was applied with agreement score estimation. Items with 80% or more agreement were considered valid.Results:The e-book “Japanese bathtub: manual for nursing professionals” was produced, organized into nine sessions, which describe the technique execution. Content was considered valid by expert judges (general score 90%).Conclusion:The e-book was considered suitable for use in training nursing professionals, with potential for dissemination of knowledge regarding humanization of care for premature babies.