Finger Oximeter – YK-81C Dual Color OLED Display6 Display ModeParameter : SpO2, Pulse Rate, Pulse Bar, Plethysmography, Battery LevelOperated by 2 x AAA Size BatteriesCE Certificated, FDAOximeter - YK81CProduct SizeSize: 57 x 33 x 36 mmWeight: 54gDelivery TermEx-Work Factory