Letsfit EW4 Bedienungsanleitung

EW4

Smart Watch

User Manual

Thank you for purchasing our products. This manual addresses the

safety guidelines, warranty, and operating instructions. Please

review this manual thoroughly before operating your device.

All pictures in this manual are for illustration purpose only. Actual product

may vary due to product firmware upgrade and app upgrade.

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CONTENTS

01 Getting Started

What’s in the Box

What’s in this Document

01 Setting up Your Watch

Charging Your Watch

Disassembling / Assembling Your Watch

04 Wearing Your Watch

05 Using Your Watch

App Installation

Account Registration and Login

Pairing the Watch with Your Phone

App Interfaces

11 Getting to Know Your Watch

Button Controls

Watch Interfaces

13 Function List

1. Tracking Sports

2. Tracking Daily Activity Data

3. Monitoring Heart Rate

4. Tracking Sleep

5. Measuring Blood Oxygen Level

6. Monitoring Stress Level

7. Breath Training

8. Setting Alarms

9. Controlling Phone Music

10. More Functions

10.1 Call Notification

10.2 Message Notification

10.3 Sedentary Reminder

20 Basic Specifications

21 FAQs

23 Warranty

23 Important Safety Instructions

- 1 -

What’s in the Box

Getting Started

Setting up Your Watch

What’s in this Document

This manual gets you started quickly with setting up your watch.

Setup ensures that your watch can synchronize its data with the

Letsfit app, where you can get detailed information on your

stats, view historical trends, log sleep, and more. As soon as

setup is complete, you’re ready to start moving. The remainder

of the manual walks you through every function on your EW4.

Charging Your Watch

Please fully charge your watch before initial use.

1. Insert the USB plug of the charging cable into the USB port

on your computer or a UL-certified USB wall charger.

2. Hold the other end of the charging cable near the port on

the back of the watch until it attaches magnetically.

3. Make sure the pins on the charging cable lock securely with

the port. The connection is secure when the watch vibrates

and the battery icon with percent charged appears on the

screen.

Charging cableSmart watch

(EW4 with bands)

Quick start guide

Quick Start

Guide

- 2 -

When the watch shows that the battery is

low, connect the watch to a USB port with

5V-500mA.

While the watch charges, there is a battery

progress bar on the screen and you can

check the battery level at any time.

4. Remove the watch from the power supply once fully charged.

● USB charger requirement: DC USB port (5V-500mA)

● Charging time: Approximately 2 hours

Disassembling / Assembling Your Watch

Disassembly

1. To remove the wristbands, turn over the watch and find the

quick-release lever.

2. While pressing the quick-release lever inward, gently pull the

wristband away from the watch to release it.

- 3 -

3. Repeat on the other side.

Assembly

1. To reattach the wristbands, slide the pin (the side opposite

the quick-release lever) into the notch on the watch. Attach

the wristband with the clasp to the top of the watch.

2. While pressing the quick-release lever inward, slide the

other end of the wristband into place.

3. When both ends of the pin are inserted, release the

quick-release lever.

All-day Wear and Exercise

Wearing Your Watch

- 4 -

For all-day wear when you’re not exercising, wear the device

on your wrist horizontally, a finger’s width below your wrist

bone and lying flat, the same way you would put on a watch.

For optimized heart rate tracking, keep these tips in mind:

1. Experiment with wearing the watch higher on your wrist during

exercise. Because the blood flow in your arm increases the

farther up you go, moving the watch up a couple of inches can

improve the heart rate signal. Also, many exercises such as

bike riding or weight lifting require you to bend your wrist

frequently, which is more likely to interfere with the heart rate

signal if the watch is lower on your wrist.

2. Do not wear your watch too tight. A tight band restricts blood

flow, potentially affecting the heart rate signal. This being

said, the watch should also be slightly tighter (snug but not

constricting) during exercise than during all-day wear.

- 5 -

Using Your Watch

App Installation

Use the watch with our customized Letsfit app. You can

download Letsfit from App Store / Google Play or scan the QR

codes below to download.

AndroidiOS

Letsfit

Note:

Letsfit app is only compatible with smartphones, not tablets

or PCs.

● iOS 11.0 & higher

● Android 6.0 & higher

● Bluetooth 4.0 & higher

Smart Phone System Requirements

- 6 -

Account Registration and Login

Please register an account with a valid email address. After

registration, check your email box to complete email

verification, and then tap "Verified" to log in.

15:05

Pair device

- 7 -

Please pair the watch with your phone in the Letsfit app,

NOT in the Bluetooth settings of your phone.

1. Enable the Bluetooth of your smartphone.

2. Open the Letsfit app on your smartphone and go to the

"Device" page, tap "+ Pair new device".

3. Tap , and your smartphone starts scanning.

4. Use the Letsfit app to scan the QR code on the watch screen.

5. Tap "√" on the watch to connect the watch to your smartphone.

Pair the watch with your

smartphone in the Letsfit app

Do NOT pair the watch

with your smartphone

in your phone’s

Bluetooth settings

iOS Android

Pairing the Watch with Your Phone

- 8 -

Notes:

● You can also search this device in the app to pair (Go to the

"Device" page → "+ Pair new device" → tap "EW4" under

"Search Devices").

● Once the watch is connected to your app, the watch will

automatically search and reconnect itself if the connection is

lost or when Bluetooth is restarted after manual disconnection.

● If you unpair the watch with the app, the information on the

watch will be reset and the watch will be restarted. Please do

not unpair the watch with the app unless there is an issue that

will require a reset.

● The watch can only pair with one smartphone at a time. When

pairing, please ensure the watch and your smartphone is

within 0.5 meters distance.

EW4

Scan QR Code

15:05

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