Size: 5.5 x 3 cm (or) 2.2 x 1.2 inches

🔸Specifications:
1. Display Type : LED Display
2. Spo2 : Measurement range : 70%~99%
3. PR : Measurement range : 30BPM~240BPM
4. Power Supply : 2xAAA 1.5V batteries
5.Power Consumption : less than 30mA
6.Operation Environment ;
*Temperature : 5°C~40°C
*Humidity : 15%~80% working 10%~80% storage
*Atmospheric pressure : 70kPa~106kPa
*Storage Temperature : -10°C-55°C
*Humidity : ≤ 95%