Finger pulse oximeter measures blood oxygenation (Spo2) and heart rate. Can operate for 30 hours continuously, very useful in cases where long-term monitoring is necessary (patients with low health or even athletes during training). Power supply: 2 1.5V size AAA alkaline batteries (not included) Supply voltage. 2.6 ~ 3.6V Current operation: ≤30mA Automatic switch-off when there is no signal on the oximeter for more than 8 seconds

The package includes:

• Finger oximeter
• Strap
• Case
• Instructions in English