prime week


Mouse over to zoom in

LEMFO LEF3 4G LTE Smart Watch

LEMFO LEF3 4G LTE Smart Watch

Android 7.1 1GB+16GB 1.39" AMOLED Screen Camera Smart Wristwatch GPS Beidou GLONASS Nano SIM WiFi BT4.0 IP67 Waterproof Watch Heart Rate Monitoring Multi-Sports Mode Pedometer Phone Watch for Android 8.0 / iOS 11.0 and above

Price on the app only:

Already have TOMTOP APP

Scan the product's code to buy directly!

Note: Please update TOMTOP App to the latest version.


Download freely and enjoy extra offers!

Ship From:
  • China Warehouse
Please select a warehouse
Usually will be shipped in business days hours
The request failed! Please try again.
Sorry, it seems that there are no available shipping methods for your location.Please contact us for further assistance.


Ship to

United States
Stock in: china


Please select a color

For each user order no more 5 item(s)

Special discount has ended

Please note each user for only 1 item(s)

Preorder Add To Cart Out of Stock

Arrival Notice

if the goods arrival in 90 days,we will inform you by email!


Arrival Notice

Notification Subscription Success!

if the goods arrival in 90 days,we will inform you by email!

Notification Subscription Failed!

Error appeared,Please try again later!

Arrival Notice

Buyer Protection

  • Full Refund If you don't receive your order
  • Full or Partial Refund , If the item is not as described Learn More >
This is a multi-functional smart watch. It supports 4G LTE calling, and has 1.39" screen and 400*400 pixel. Support Nano SIM card, 4G network. It also supports multiple languages and gives you great experience!


[High-Class Hardware]: Android 7.1 operating system, 1.39" AMOLED screen, 400*400 pixel, 1GB+16GB memory.
[Advanced Chips]: MTK6739, quad-core, 1.28GHz,
more effective and more convenient.
[4G LTE]: Built-in Nano SIM card, support 4G network, independent call, high speed data transmission.
[Camera]: Hardware 200W+software 500W, its picture is clear and bright, easy to record your beautiful moments in life!
[GPS Positioning]: GPS+Beidou, compatible with GLONASS, help you find the direction faster and more conveniently.
[Heart Rate]: Measure your heart rate anytime, so that you manage your health.
[9 Sport Modes]: Running outdoor, running indoor, basketball, football, walking, badminton, rope skipping, riding, ping-ping.
[Long Standby Time]: Standby for 32 hours, built-in 600mAh battery, low consumption.
[Wide Compatibility]: Support BT 4.0, Android 8.0 and above, iOS 11.0 and above.
[IP67 Waterproof]: Don't worry about splashing, light raining, sweat, etc in daily life.
[Main Functions]: Independent 4G Call, BT, GPS, WiFi, Multi-Sports Modes, Heart Rate, etc.

Chip: MTK6739, Quad-Core, 1.28GHz
Screen: 1.39" AMOLED
Resolution: 400*400 Pixel
SIM Card: Nano SIM
Network: TDD LTE—B38/B39/B40/B41
               FDD LTE—B1/B2/B3/B5/B7/B12/B20
WiFi: Support
BT: BT 3.0/4.0
Camera: Support
G-Sensor: BMA423
Operation System: for Android 7.1
Compatibility: with Android 8.0 / iOS 11.0 and above
Battery: 600mAh
Battery Type: Lithium battery
Standby Time: 32-67 hours
Call Time: 3 hours
Video Format: MP4, AVI, FLV, 3GP, 3GPP, MKV
Picture Format: JPG, PNG, JPEG, BMP
Speaker: Support
Vibration: Support
OTA Upgrade: Support
Language: Simplified Chinese, Traditional Chinese, English, French, German, Italian, Portuguese, Spanish, Bengali, Hindi, Indonesian, Korean, Persian, Polish, Russian, Thai, Turkish, Vietnamese, Burmese, Hebrew.
Other Functions: Recording, Personal UI, Pedometer, Message, Notification Remind, Weather, Browser, Mail, File Management, Application Download, Calendar, Calculator, Sports Test, Map, Translation, Heart Rate Monitoring, etc.

Brand: LEMFO
Color: Black / Silver (Optional)
Watch Case: Alloy
Watch Band: TPU+Leather
Water-Resistant Level: IP67
Dial Diameter: 4.9cm / 1.93in
Dial Thickness: 1.5cm / 0.59in
Watchband Width: 2.0cm / 0.79in
Watchband Length: 26cm / 10.24in (adjustable: 94-135mm)
Watch Weight: 100g
Package Size: 12.5 * 8.5 * 7cm / 4.92 * 3.35 * 2.76in
Package Weight: 224g

Daily water resistance (not for showering and swimming). Don't press any button in the water.
The data on the above are theoretical values, please refer to the actual use.
There is an error of 1-3mm due to manual measurement.
Because of photograph light or other reasons, the picture and material object may have slight difference, please in kind prevail. Thanks!

Package Lists:

1 * Smart Watch
1 * USB Cable
1 * Charging Base
1 * Screwdriver
1 * Film
1 * User Manual


Post a new topic

Please note that TOMTOP Forums are a community for all communicating and getting help each other. There will be some enthusiastic friends participate in your discussions. Of course TOMTOP customer service (with tomtop customer service icon) response is guaranteed ,which is the same way you contact us at

open this forum in full page
Customer Reviews

There are no customer reviews yet.

  • 5 stars
  • 4 stars
  • 3 stars
  • 2 stars
  • 1 stars

Share your thoughts with other customers and get Tomtop Points, the first 5 reviews get DOUBLE Tomtop Points!

Write a Customer Review
Be the first to review this item

Top Sellers More>

Please activate your account first. We will resend the activation email to help you complete your registration.

Recently Viewed


TOMTOP use cookies to give you the best shopping experience. If you continue to use our services or create a new account, we will assume that you agree to our  Privacy Policy.

Tell us which product you want to Social Saving

Click the refresh verification code