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All pictures in this manual are for illustration purpose only. Actual product may vary due to product firmware upgrade and app upgrade.
Smart watch (IW2 with bands)
Charging cable
User manual
Quick start guide
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 IW2.
Please fully charge your watch before initial use.
Disassembly
Assembly
All-day Wear and Exercise
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:
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.
Note: The Letsfit app is only compatible with smartphones, not tablets or PCs.
Smart Phone System Requirements
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.
Please pair the watch with your phone in the Letsfit app, NOT in the Bluetooth settings of your phone.
Pair the watch with your smartphone in the Letsfit app
iOS
Do NOT pair the watch with your smartphone in your phone's Bluetooth settings
Notes:
Activity
Daily Workout Minutes
Daily Active Hours
Daily Steps
Training
When you start a sport mode on your watch, detailed data and graphs will be displayed here after the exercise is over (swipe down to sync data first).
Settings
Tap "IW2", you can customize call / message / alarm alert or set other parameters.
This is a touch screen; swipe the screen to go to different interfaces, and tap to enter the function.
The home screen is the clock. On the clock:
After the watch is paired with your phone, the home screen will display the time and date.
You can customize the home screen by following the steps below:
Method 1:
Method 2:
Tracks your exercise data in up to 10 sports modes. Choose the mode that you want to start on the watch.
Records your daily training data.
Tracks your real-time heart rate automatically and continuously.
Measures your blood oxygen level.
Tracks your daily steps, calories burned and distance data.
Check your daily sleep data.
Guides your breathing for a relaxation.
Set different alarms on the watch or in the app to make the watch vibrate to remind you.
Use the stopwatch to make your exercise more standardized.
Customize your timer.
Control the music playing of your smartphone.
Some basic settings and information of the watch.
The watch tracks your exercise data in up to 10 sports modes.
Start a sport
Tap "Training" → Swipe the screen to select a sports mode you want to start.
Set a target
Before beginning an exercise, you can set training goals such as distance, duration, calories burned, etc.
GPS connecting (Only for outdoor running / outdoor walking / outdoor cycling modes)
You can start Outdoor Run / Outdoor Walk / Outdoor Cycle in GPS mode on the watch using your phone's GPS (take your phone with you during these exercises). When you start an outdoor sport, the watch begins searching GPS signal. Please let the Letsfit app run in the background and allow the location services on your phone, then move to an open area and stand still to better receive the signal. After the GPS is connected, the watch will start tracking the sport.
When the GPS connection fails, you can tap to start Outdoor Run, Outdoor Walk, Outdoor Cycle in non-GPS mode. Your movement route will not be displayed in your training record after the exercise is ended.
During sports
Swipe the screen up or down to flip through exercise data.
End the sport
Press the function button and tap to end the sport and tap
to confirm.
Exercise data is displayed after the exercise has ended. Swipe up the screen to flip through exercise data:
Notes:
Tap "Heart rate" in the function list to enter the heart rate interface, the watch will automatically measure your real-time heart rate. You can also view your all-day heart rate data in the heart rate interface of the watch or in the app.
Note: To monitor heart rate more accurately, wear the watch on the upper position of your wrist and a bit tighter than usual when you exercise. In addition, complete your profile in the app.
Before measuring, wear the watch a finger-width below the wrist bone and a bit tighter than usual.
The watch tracks your all-day activity data, including steps, calories burned and distance.
The watch automatically tracks your sleep duration and consistency with a comprehensive analysis of sleep quality data. Tap "Sleep" in the function list so you can check your sleep records and improve your routine.
Tap "Breath" in the function list to enter breathing mode. Select the speed and duration of the breathing training. Then tap to start and follow the instructions to breathe. If you want to end the breathing training, press the function button to exit.
Method 1 (On the watch):
Note: You can set up to ten alarms on the watch.
Method 2 (In the app):
You can enable/disable the alarm on your watch (Tap "Alarm" on the watch and then choose to turn on/off the alarm you set.)
After the watch is connected to your phone, tap "Music control" in the function list and control the music playing on your phone.
Note: You can only control the music player that's running on your phone.
When there is an incoming call, the watch vibrates to alert you, and the screen displays the caller ID.
Tap on the watch screen to reject the call.
Notes:
When messages (like Facebook, Twitter, and Instagram messages) come in, the watch vibrates to alert you, and the screen displays the message content.
Notes:
The watch vibrates to remind you to get up and move around when you have been sitting too long ("Activity" page → "Active Hours" → "Sedentary Alert Settings", enable the movement reminders function and set the remind interval.)
Model No.: IW2
Sync: Bluetooth 5.0
Screen: 1.55" TFT LCD
Battery Capacity: 260mAh
Working Voltage: 5V-500mA
Working Temperature: 0℃ to 45℃
Weight: 1.34oz (38g)
Working Time: about 10 days
Failure to pair the watch with the Letsfit app on your smartphone again
If you still fails to connect the watch to the app, please kindly take the following steps:
Occasional failure to connect with Bluetooth
Reboot your smartphone or restart your smartphone's Bluetooth.
Failure to receive SMS / calls notifications
Calls / SMS notification function works when the watch connects to your smartphone via the app. Please kindly refer to the following tips:
The watch is disconnected from the Letsfit app on your smartphone
The watch will disconnect from your smartphone in the following cases:
To reconnect the watch to your smartphone, please kindly take the following steps:
Blood Oxygen Level Measurement Accuracy
The Blood oxygen level will be affected by factors such as motion, watch placement on the wrist, skin temperature and skin perfusion. These factors will cause fluctuations in blood oxygen measurements.
For a single measurement on the watch, please wear the watch a finger-width below the wrist bone, snug but comfortable on your wrist. When measuring, stay still and make sure your wrist is flat with the watch facing up. If you are sitting, you can rest your arm on a table with the watch facing up.
The smart watch blood oxygen sensor isn't a medical device and won't be able to diagnose or monitor any medical conditions. If there is a problem with the measurement, we recommend you consult your doctor.
We strive to build our products with the highest attention to detail and craftsmanship. However, sometimes there are occurrences of a defect, so we are happy to offer a ONE-year hassle-free warranty on all our devices as we continue to make amazing products. Please contact us if you have any questions about our devices.
The device contains electrical equipment that may cause injury if not used properly. For example, prolonged contact may contribute to skin allergies for some users. To reduce irritation, please read the safety guidelines on the following pages to ensure proper use and care.
Battery Warnings
A lithium-ion battery is used in this device. If these guidelines are not followed, batteries may experience a shortened life span or may cause fire, chemical burn, electrolyte leakage, and/or injury.
Health Warnings
Maintenance
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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