Fingertip Pulse Oximeter Sling and there's no need for

and there's no need for additional tools

and Water-Resistant: Designed for comfort and durability in various conditions

Or you can lock the extension or flexion at different angles so that you have movement to a specific angle before it stops

Its lightweight

Fingertip Pulse Oximeter Sling and there's no need forFinger pulse oximeter measuring O2 (SpO2) and heart rate. Specifications Measurement range of pulse rate: 25bpm 250bpm Accuracy of SpO2: 70% 100% 2% Accuracy of pulse rate: 1% 1bpm Power consumption: 40mA Operation environment: Temperature(C): 5~40, Relative humidity: 80% Boot method: Push button to boot Power supply: 2 1. 5V AAA alkaline batteries Display: LED Dimension: (58 33 33. 5) mm Weight: 35g (without batteries) Automatic shutdown time: 8s