Viatom Checkme O2 Max

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Fingertip Oximeter User Manual

Checkme O2 Max

Smart Wrist Pulse Oximeter

User Manual

1. Introduction

1.1 Intended Use

This product is intended to be used for measuring, displaying and

storing of pulse oxygen level (SpO

) ， heart rate and motion of

adults. App can show the oxygen level, heart rate; get record,

display results and report.

It's not a medical device. This device is for Sports and Aviation

use only and not intended for medical use.

Note:

The data and results provided by this device are for pre-check screening

purpose only and cannot be directly used for diagnostic or treatment.

The data provided by the APP and PC software (optional) is not intended

for diagnosis or treatment purpose, always consult your doctor for any

health condition.

Warnings and Cautionary Advices

• DO NOT squeeze the sensor or apply excessive force on

the sensor & cable.

 Do not use this device during MRI examination.

 Never submerge the device in water or other liquids. Do not

clean the device with acetone or other volatile solutions.

 Do not place this device in pressure vessels or gas

sterilization device.

 Consult your doctor immediately if you experience

symptoms that could indicate acute disease.

 Do not self-diagnose or self-medicate on the basis of this

device without consulting your doctor. In particular, do not

start taking any new medication or change the type and/or

dosage of any existing medication without prior approval.

 Use only cables, sensors and other accessories specified in

this manual.

 Prolonged using may increase the risk of undesirable

changes in skin characteristics, such as irritation,

reddening, blistering or burns.

 Check the oxygen level sensor application site every 6-8

hours to determine the positioning of the sensor and the

circulation and skin sensitivity of the user. User sensitivity

varies depending on personal status or skin condition. For

users with poor peripheral blood circulation or sensitive

skin, inspect the sensor site more frequently.

 Functional tester cannot be used to assess the accuracy of

an oxygen level sensor or a device.

 This device is designed to determine the arterial oxygen

saturation percentage of functional hemoglobin. Factors

that may degrade pulse oximeter performance or affect the

accuracy of the measurement include the following:

- excess ambient light

- excessive motion

- electrosurgical interference

- blood flow restrictors

(arterial catheters, blood pressure cuffs, infusion lines,

etc.)

- moisture in the sensor

- improperly applied sensor

- incorrect sensor type

- poor pulse quality

- venous pulsations

- anemia or low hemoglobin -concentrations

- cardiogreen and other -intravascular dyes

- carboxyhemoglobin

- methemoglobin

- dysfunctional hemoglobi

1.2 Guide to Symbols

1.3 Unpacking

Main Unit × 1

Ring Sensor × 1

Cable × 1

User Manual × 1

2. Using the Device

2.1 Overview

1. Pulse oximeter

2. Wristband

3. Sensor interface / charging interface

4. Power button

5. Oxygen level sensor

Screen display item description:

Oxygen level

Heart rate

Wear the sensor

Time

Remaining battery capacity

Reminder is on

Reminder is off

Bluetooth is connecting

2.2 Charging

Charge the battery before using.

Use the charge cable to charge the battery of device in the USB

Port of the computer or with USB charging adapter.

After being fully charged, the device will power off automatically.

2.3 Power on/off

Power on:

Press the button for 1 second to turn on the device.

Power off:

Automatically power off: The device will turn off automatically in 2

minutes if no measurement, no operation or without App connection.

Manually power off: You can press the button for about 2 seconds

to turn off.

2.4 Take the first recording

Start. Wear the device and the Ring Sensor, press the button to

power on. And keep yourself in the quiet environment.

(For the sake of clarity, recommended the user wear the device

watch on their left wrist and put the ring sensor on the thumb. If it

is too tight, try another finger. Avoid being loose.)

Stop. After the record, take off the Ring Sensor (and the device),

the recording will be saved after the countdown.

(If the working time is less than 1 minute, the data

will not be saved.)

Note:

• Please avoid excessive motion for the sensed finger during

recording and avoid any strong ambient light condition.

2.5 Stop working & sync data

Take off the sensor, the countdown will begin.

During the countdown, if you wear the sensor

again, the record will be resumed.

After the countdown, the data will be ready for sync.

Note:

The duration of the recording is 1mins~10 hours. And the device

can collect and store maximum 4 recording, when the 5th recording

coming, the first recording will be will covered.

Sync data to the ViHealth App

You can Sync the data to your app after the

countdown or next time after you turn on the device.

Note: Refer the ViHealth app manual for more

details.

2.5.1 How to find the Serial Number？

1）Detach the main unit from wristband.

2）Flip the main unit over, the series number is

printed on the label of product.

Note:

The serial number is on the back of the device.

2.6 How to synchronize the time of the device

The time of the device will be automatically synchronized with the

network time on your smart device after connected with the app.

Note: Refer the ViHealth app manual for more details.

2.7 Reminder

When the device detects low oxygen level or abnormal heart rate, it

supports triggering reminders.

You can customize the reminder after the device power on, or use

the App to configure.

2.8 Download App

App name: ViHealth

iOS: App Store

Android: Google Play

Compatibility

The device is compatible with iOS versions 9.0+ and Android

versions 5.0+. Refer the ViHealth app manual for more details.

2.9 Bluetooth Connection

The device Bluetooth will be enabled automatically when the device

is on.

Note: DO NOT PAIR in the settings of your smart device.

3. PC software

3.1 Download the PC Software

PC Software: O2 Insight Pro

Download from:

https://iwearpulse.com/pages/app- download

Install the software on Windows PC or Mac.

3.2 How to connect the device to PC

1. Turn on device, connect the device to PC USB port with the

supplied Cable of data.

2. Open the PC software, download data from the device.

3. With the optional PC software,You can view and print report,

which can also be exported as PDF or CSV files.

3.3 How to connect the device to Mac

1. Turn on device, and turn on the Bluetooth of the Mac.

2. Open the “O2 Insight Pro” software and click the “Connect”

on the screen. Choose your device to connect.

3. Then click the “download” on the screen. Then the data will

sync with your Mac.

4. You can view and print report, which can also be exported as

Symbol

Description

Manufacturer

Date of manufacture

Serial number

MRI unsafe. Presents hazards in all MR

environments as device contains strongly

ferromagnetic materials.

Indicate separate collection for electrical and

electronic equipment (WEEE).

IP22

Protected against spraying water and against

access to hazardous parts with a tool, per IEC

60529.

Follow Instructions for Use.

Type BF-Applied Part

Warning and Caution!

No alarm system.

This product complies with the rules and

regulations of the Federal Communication

Commission.

Non-ionizing radiation

This product complies with verpackG.

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Summary

Introduction and Basic Use

Device Purpose and Safety Precautions

Defines intended use for adults and highlights critical safety warnings, including MRI, water, and skin care.

Getting Started with the Device

Covers unpacking, device overview, powering on/off, charging, and taking the first measurement.

Data Sync, App, and Connectivity

Explains data syncing, app download (ViHealth), finding serial numbers, time synchronization, and Bluetooth connection.

Device Care, Troubleshooting, and Technical Details

Maintenance and Troubleshooting Guide

Details cleaning, battery maintenance, and solutions for common device issues like no response or app connection problems.

Specifications and Regulatory Compliance

Lists technical specifications, environmental requirements, and compliance with standards and FCC regulations.

Electromagnetic Compatibility Information

Covers EMC guidance, warnings, emissions/immunity declarations, and recommended separation distances for safe operation.

The Checkme O2 Max Smart Wrist Pulse Oximeter is a non-medical device designed for sports and aviation use, intended for measuring, displaying, and storing pulse oxygen level (SpO2), heart rate, and motion in adults. The accompanying app can display oxygen levels and heart rate, record data, and generate reports. It's important to note that the data and results provided are for pre-check screening purposes only and cannot be directly used for diagnostic or treatment. Users should always consult their doctor for any health condition.

Function Description:

The device operates by using a ring sensor worn on a finger (preferably the thumb of the left wrist) to detect SpO2 and heart rate. It features a power button for turning the device on/off and initiating recordings. The device automatically powers off after 2 minutes of no measurement, no operation, or without an app connection. Users can also manually power it off by pressing the button for about 2 seconds. During recording, it's crucial to avoid excessive motion of the sensed finger and strong ambient light. The device can store up to 4 recordings, each lasting from 1 minute to 10 hours. When a fifth recording is initiated, the oldest recording will be overwritten. Data can be synchronized to the ViHealth App or PC software (O2 Insight Pro) after a recording is complete or the next time the device is turned on. The device also supports reminders for low oxygen levels or abnormal heart rates, which can be customized via the device or the app.

Important Technical Specifications:

Intended Use: Measuring, displaying, and storing SpO2, heart rate, and motion in adults for sports and aviation.
Classification: MDD, 93/42/EEC; R&TTE, 1999/5/EC; ROHS 2.0, 2011/65/EU.
Degree Protection against Electrical Shock: Type BF.
Operating Temperature: 5 to 40°C.
Storage Temperature: -25 to 70°C.
Relative Humidity (non-condensing): 10% to 95%.
Barometric Pressure: 700 to 1060 hPa.
Degree of Dust & Water Resistance: IP22.
Weight (main unit): 18 g.
Display: OLED.
Wireless: Bluetooth 4.0 BLE.
Vibrator: Built-in.
Charge Input: DC 5V ±10%.
Battery Type: Rechargeable lithium-polymer battery.
Battery Run Time: 72 hours.
Charge Time: 2.5 hours.
Oxygen Level Range: 70% to 100%.
Oxygen Level Accuracy (Arms): 80-100%: ±2%, 70-79%: ±3%.
PR Range: 30 to 250 bpm.
PR Accuracy: ±2 bpm or ±2%, whichever is greater.
Wave Length: 660-940nm.
Output Power: Red/Infrared: 3mW max. avg.
Storage Capacity: 4 records, 10 hours for each.
Mobile APP Compatibility: iOS 9.0 or above (iPhone 4s/iPad 3 or above); Android 5.0 or above with Bluetooth 4.0 BLE.
Compliance: FCC Part 15, EN 60601-1-2.
MRI Safety: MRI unsafe, contains strongly ferromagnetic materials.

Usage Features:

Unpacking: Includes the main unit, ring sensor, cable, and user manual.
Overview: The device consists of a pulse oximeter, wristband, sensor/charging interface, power button, and oxygen level sensor. The OLED screen displays oxygen level, heart rate, wear status, time, remaining battery capacity, and reminder status (on/off). Bluetooth connection status is also indicated.
Charging: The battery should be charged before first use. Use the provided cable to charge via a computer's USB port or a USB charging adapter. The device automatically powers off when fully charged.
First Recording: To start a recording, wear the device and ring sensor (preferably on the left wrist with the sensor on the thumb), press the power button, and remain in a quiet environment. If the sensor is too tight, try another finger; avoid it being loose.
Stopping and Syncing Data: After recording, remove the ring sensor and device. A countdown will begin, after which the data will be ready for sync. If the sensor is worn again during the countdown, the record will resume.
Serial Number: The serial number is printed on the label on the back of the main unit after detaching it from the wristband.
Time Synchronization: The device's time automatically synchronizes with the network time via the smart device when connected to the app.
Reminders: Customizable reminders for low oxygen levels or abnormal heart rates can be configured via the device or the app.
App Download: The ViHealth app is available on the App Store (iOS 9.0+ compatible) and Google Play (Android 5.0+ compatible).
Bluetooth Connection: Bluetooth is automatically enabled when the device is on. Users should NOT PAIR the device in their smart device's Bluetooth settings.
PC Software (O2 Insight Pro): Available for Windows and Mac. To connect, turn on the device, connect it to the PC via USB cable, open the software, and download data. On Mac, turn on Bluetooth, open the software, click "Connect," choose the device, and then "download." The software allows viewing, printing, and exporting reports as PDF or CSV files.

Maintenance Features:

Cleaning: Use a soft cloth moistened with water or alcohol to clean the device surface.
Battery Care: To maintain battery health, charge the battery every 6 months, even if not in use.

Warnings and Cautions:

Do not squeeze the sensor or apply excessive force.
Do not use during MRI examinations.
Never submerge the device in water or other liquids.
Do not clean with acetone or other volatile solutions.
Do not place in pressure vessels or gas sterilization devices.
Consult a doctor for acute disease symptoms; do not self-diagnose or self-medicate.
Use only specified cables, sensors, and accessories.
Prolonged use may cause skin irritation, reddening, blistering, or burns.
Check the sensor application site every 6-8 hours for positioning, circulation, and skin sensitivity.
Functional testers cannot assess device accuracy.
Factors that may degrade performance or accuracy include excessive ambient light, motion, electrosurgical interference, blood flow restrictors, moisture, improper sensor application, incorrect sensor type, poor pulse quality, venous pulsations, anemia, certain dyes, carboxyhemoglobin, methemoglobin, and dysfunctional hemoglobin.
Using non-specified accessories may increase electromagnetic emission or decrease immunity.
Do not use adjacent to or stacked with other equipment.
Special EMC precautions are required; other devices may interfere even if CISPR compliant.
Erroneous measurements may result if the input signal is below minimum technical specifications.
Portable and mobile communication equipment may affect device performance.