CONTEC CMS50NA Pulse Oximeter Fingertip Blood Oxygen Saturation Monitor SpO2 and PR Value Waveform Blood Oxygen Neck/Wrist Corda, Grey Flavoring Powders you can adjust the length

you can adjust the length you need by elastic button

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CONTEC CMS50NA Pulse Oximeter Fingertip Blood Oxygen Saturation Monitor SpO2 and PR Value Waveform Blood Oxygen Neck/Wrist Corda, Grey Flavoring Powders you can adjust the lengthBrand: CONTEC MED Color: Grey Features: [Accurate & Fast Results] Measures accurately and quickly spo2(blood oxygen saturation of arterial hemoglobin levels), pulse rate,pulse rate waveform and bar graph TFT display. With rotatable multi directional display. Screen brightness adjustable. [Portable & Easy To Use] The light weight oxygen monitor is about 50g(with the batteries), you only need to put your finger in the fingertip pulse oximeter testing