Photo 1 of HealthTree Bluetooth Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor and Heart Rate Monitor with Free APP, for Apple and Android, 2 X AAA Batteries, Lanyard gray

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Photo 1 of HealthTree Bluetooth Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor and Heart Rate Monitor with Free APP, for Apple and Android, 2 X AAA Batteries, Lanyard grayPhoto 2 of HealthTree Bluetooth Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor and Heart Rate Monitor with Free APP, for Apple and Android, 2 X AAA Batteries, Lanyard gray