Portable Blood Oxygen Monitor Finger Pulse Oximeter $ 12.74 Overview: High-definition L-ED display screen, clear to view. Small and lightweight, simple one-click measurement. Detect the blood oxygen and pulse rate quickly and accurately, with abnormal alarm. Silicone finger mould, comfortable to wear. Suitable for all ages, it is portable for home and travel. Specification: Material: ABS Power supply mode: dry battery (not included) Size: 6x3.6x3.5cm Applicable parts: hands Style: Finger clip type Package Content : 1x Fingertip Oximeter 1x Hanging Rope