Bluetooth OLED Fingertip Pulse Oximeter Gray

ABOUT THIS ITEM:  Recommended Age: >12 Years Old Packing Demension: 8.8cm*7cm*4cm Item Weight: 37g Bluetooth: Support Battery Required: 2XAAA batteries Packing List:  1* bluetooth pulse oximeter , 2* AAA batteries, 1* lanyard, 1* user manual. Operation Guideline: 1. install the batteries correctly, 2. insert your finger to the device infrared finger cavity, 3. press the button, turn on the power and start the measurement,  4. keep your body still while measuring and wait for the result. How to connect to Bluetooth? Android：Download the ''HealthTree'' app from the play store>agree location turn on（If you don't turn on the location, the bluetooth will fail to connect.）>Turn on the phone's bluetooth>Turn on the oximeter（Bluetooth will automatically connect） Apple：Download the ''HealthTree''app in the Apple Store>Turn on the phone's Bluetooth>Turn on oximeter（Bluetooth will automatically connect）