Features:
• Color OLED display;
• Accurately measures SPO2 value and Pulse Rate value;
• 4-direction display automatically;
• Automatic start measuring after putting finger into tuber cushion;
• Power off automatically when no signal;
• Audio & visible alarm function;
• Low battery voltage indication;
• Low power consumption, 30 hours battery life;
• 1/3 of business card size.