Bluetooth Fingertip Pulse Oximeter Oximetry Blood Oxygen Saturation Monitor OLED Pulsoksymetr SPO2 PR Heart Rate Monitor.     Features:  - Automatically receive data from the oxygen monitor in real-time, and store the received data. View the stored data at any time. Only synchronize and store data while opening the APP.  - Monitoring your HRV can help you reach peak productivity, manage stress, and fine-tune your training regimen.  - Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away.     Specifications:  Material: ABS.  Color: White.  Application: Finger.  Support system: Android and for Apple.  Blood oxygen saturation accuracy rate: 70-99%PR.  Measuring range: 30-240 BPM.  Display: IPS.  Version: V 5.0.  Size: 6*4*5cm.     Note:   The current version only supports Android system, and the upcoming version can support Apple system (not for sale yet).     Package Included:  1 x Oximeter 1 x Manual