Features: brand new and high quality Adjustable 8 seconds ,you can measure quickly . Easy use and oprate,one button measurement design ,and auto off when no singal ,simple easy ,power saving. Lightweight compact portable , mulitple usage scenarios,widely use for home,office ,community centre,high mountain area,sport healthy care and other place,you can monitor your healthy any for time . Multifunction fingertip pulse oximeter with pulse wave graph and perfusion index,low voltage indicator,,it can accurate measure your heart beat spo2,pluse rate . OLED 360 ratatable view directions display ,you can easy accurate reading data on vivid and for sharp LED display. Wonderful warm gift , it is best warm sweet gift for your parents , family ,or friend. Specifications: Material:Platic, Electronic Components Color:Black Mirror+White Plug:Standard Voltage Pure White Size:30×57×31mm/1.25×2.3×1.3inches Display mode: OLED display screen Display Format: Oled Two-color Display Power Requirement: 2×1.5 VA Alkaline Batter Power Consumption: Less Than 30 MA Voltage: for DC 3.0V Screen Resolution: 128×64 SpO2 Measure range:0%~100% PR Measure range:30b pm~250bpm Package Includes: 1Pcs Pulse Oximeter note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.