This observational, non-interventional cohort study evaluates the clinical use of the Bambi Belt-a CE-certified, wireless device for non-invasive heart rate and respiration monitoring-in extremely preterm infants (\<26 weeks gestation). 15 infants with intact skin and age \<24 hours will be monitored using the Bambi Belt during the first ten days of life. Primary outcomes include ease of use (application, signal stability), skin tolerance, and user experience (nurses and parents). Standard care remains unchanged. Data will be collected via clinical records and evaluation forms.