Wearable devices, such as smartwatches, are widely used for remote mon itoring of blood pressure (BP) and heart rate (HR). However, their reliability across different skin phototypes still requires validation, as photoplethysmog raphy (PPG) signals may be affected by skin pigmentation. This study evalu ated the correlation and agreement of systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR) measurements obtained using a Samsung Galaxy Watch4, with an Omron HEM-7320 sphygmomanometer as the reference standard. Forty-eight participants were equally distributed among Fitzpatrick skin phototypes II, III, and IV (n = 16 per group). Simultaneous measurements were performed with participants seated at rest, following a standardized protocol. Statistical analyses included Pearson correlation and Bland–Altman agreement. Strong correlations were observed between the de vices. Stratified analysis demonstrated similar performance across skin photo types, with no systematic bias associated with skin pigmentation. Overall re sults showed SBP (r = 0.957; bias = 2.417 mmHg), DBP (r = 0.972; bias = 1.000 mmHg), and HR (r = 0.919; bias = 1.896 bpm). Bland–Altman analysis confirmed good agreement, supporting the reliability of the smartwatch for re mote BP and HR monitoring across Fitzpatrick skin phototypes (Table 1).