Amazfit T-Rex Ultra User manual

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Amazfit T-Rex Ultra

Product Manual

A2142

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01 Package Contents

Smartwatch with band × 1 Charging base × 1 Instruction Manual × 1

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02 About the Watch

Note: Press and hold the power button to turn on the watch. If the watch cannot be turned on,

please charge it and then try again.

Upper button

Lower button

Power/Select button

Back button

Heart rate sensor

Charging contacts

Touch screen

Note:

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For better user experience, please use the most recent version of the APP.

The operating system needs to be Android 7.0, iOS 12.0, or above.

Do not pair the watch directly using your mobile phone’s Bluetooth. Follow the steps in the app to

pair your watch correctly.

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03 Pairing the Watch

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Scan the QR code on the Instruction Manual with your mobile phone to

download the app to your mobile phone. You can also download the latest

version of app from the Google Play Store or Apple App Store.

Open the app, register an account and log in.

Follow the steps in the app to pair your watch correctly. Once

pairing is complete, the watch will display the correct time.

You can set other watch features as needed. Download Zepp App

Zepp is a must-have app for this watch. It provides scientific sleep and workout

guidance and personalized health services to help you start a healthy lifestyle.

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04 Charging the Watch

Note:

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2.

Please use the dedicated charging cable that comes

with the product. To prevent charging abnormality or damage

to the charging cable, make sure that the charging base is dry

before charging.

Please use a 1A or above power adapter.

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2.

3.

Connect the watch's charging cable to a power adapter or a computer's USB port.

Put the watch into the charging base. Pay attention to the direction and position of the

watch, and make sure that the metal contacts on the back of the watch fit closely with the

charging base.

When charging starts, the watch screen displays the

charging progress.

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In order to ensure the accuracy of heart rate, blood oxygen, and

other measurements, please wear your watch at a distance of at

least one finger away from the carpal, and keep the strap at a

comfortable snugness.

During workout, please wear it as tightly as possible to ensure that

the watch does not shake. Wear your watch at a distance of at

least one finger away from the carpal to obtain more accurate

heart rate data. After workout, you can loosen the strap

appropriately to ensure a comfortable wear experience.

When measuring blood oxygen saturation, wear the watch correctly.

Avoid wearing the watch on the wrist joint, keep your arm flat, maintain comfortable (appropriately

tight) fitting between the watch and the skin of your wrist, and keep your arm still throughout the

measurement process.

05 Wearing the Watch

Note:

When affected by external factors (arm sag, arm sway, arm hair, tattoo, etc.), the measurement result

may be inaccurate or the measurement may fail and provide no output.

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Product Name: Smart Watch

Product model: A2142

Input: DC 5 V 550 mA

Bluetooth version: V5.0

WLAN: 2.4 GHz 802.11 b/g/n

Bluetooth output power: <18 dBm

View product certification information on the watch's Settings > System > Regulation page.

Device requirements: Devices installed with Android 7.0 or iOS 12.0 or above OS versions

Working temperature: -30°C-45°C

Charging temperature: 0°C-45°C

Water resistance rating: 10 ATM

Bluetooth frequency: 2402–2480 MHz

Wi-Fi frequency: 2402–2480 MHz

Wi-Fi output power: <20 dBm

The Bluetooth® word mark and logos are registered trademarks owned by

Bluetooth SIG, Inc. and any use of such marks by Anhui Huami Information

Technology Co., Ltd. is under license. Other trademarks and trade names are

those of their respective owners.

06 Basic Parameters

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Notes:

The low temperature mode ensures that the watch can be used in -30°C - -10°C environments, but

the touch screen and certain features cannot be used.

After the automatic low temperature mode is enabled, the watch will automatically switch between

low temperature mode or normal mode according to the temperature. The watch needs to restart

during the mode switching process.

You can also exit low temperature mode by pressing and holding the backbutton.

This device is equipped with a built-in battery that cannot be removed or replaced. Do not

disassemble or modify the battery by yourself.

Disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, can

result in an explosion.

Leaving a battery in an extremely high temperature surrounding environment can result in an

explosion or the leakage of flammable liquid or gas.

A battery subjected to extremely low air pressure may result in an explosion or the leakage of

flammable liquid or gas.

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07 Battery Safety

This device is only applicable to recreational free diving activities. The maximum depth at which it

can function normally is 30 meters. Do not use it during professional diving or scuba diving.

The free diving related features of this device can only be used by divers with relevant qualifications.

Before using this device, make sure that you have received professional training and know how to

use this device. When using free diving related features (including breath holding training and

breath holding test), the user should be accompanied by a coach, an experienced diving

companion, or a professional.

Before using the device, you should be aware that any electronic device may malfunction, and this

device may be unable to provide accurate data information in specific cases. Please carry a backup

device as needed.

Free diving activities contain certain risks. Before using the device, make sure that your physical

condition is suitable for such activities. Consult your doctor for advice if you have any questions.

To avoid the risks of decompression sickness, make sure that you have enough rest on the surface of

the water. There should be sufficient surface intervals between scuba diving and free diving.

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08 Diving Safety