en English

JF300 Smart Bracelet

1、 This product is not a medical device,and the measured data is for reference only,not as a

basis for medical diagnosis. When the data is monitored for 24 hours, the default heart rate, blood oxygen, blood pressure, temperature,etc.are automatically measured once every 15 minutes.

2、The data comes from the Starmax laboratory. The actual battery life varies according to the user’s usage habits,please refer to the actual situation.In typical scenarios,the battery life can be up to 7 days: keep the heart ratemonitoring function on,exercise an average of 30 minutes per week,and keep message remindersturned on.(50 messages per day,5 calls per day), daily raise the wrist to brightenthe screen;in long battery life mode,it can be used for 14 days.

3、First,the temperature of the watch bodyis detected by the external sensor,and then the

temperature value is estimated by the algorithm.The data is for reference only,not as a basis for medical diagnosis.

4、 16 sports modes include: Walking, Running,Cycling,Mountaineering,IndoorRunning

Football, Basketball, Badminton, Tennis,Fitness,Spinning,Skipping,Roller Skating, Dancing,Yoga,Hiking.Up to 4 modes can be added to the bracelet,which can be customized in the APP.

5、 Sleep Monitoring data is not displayed onthe bracelet,and the data can be synchronized to

the APP after connecting to the APP.

6、Due to loS system limitations,some IOS15 users do not support the call reminder function. 7、Women’s health needs to be used within the APP. 8、 Weight management needs to be used within the app.

9、The alarm clock needs to be set on the APP before it can be synced to the watch. 10、Meet the IP68 waterproof standard,can be suitable for daily bathing or other daily

waterproofing,not suitable for diving,hot water bathing, hot spring, sauna and other wading activities or deep water activities. The waterproof function is not permanent,and the protection performance will decrease due to long time use or damage.

Additional information

Body Dimensions




Display size

0.96’ TFT

Display Resolution


Battery Capacity


Product Details:

BT Chipset TLSR8251
G-sensor_IC SC7A20/2*2/LGA12
BT Version BLE 5.0
BT Range 8-10m
Memory(Ram+Rom+Flash) 512KB+32KB+32MB
Date Storage 7days
Water Resistance IP68
Charging type USB
Compatible system Android 4.4 or above, IOS 9.0 or above
4.4, iOS9.0
Sport & Healthy
Daily Activity Record
Sleep Quality Monitoring
Heart Rate Monitoring
Body Temperature Test
Multi-sport Mode
Sedentary Reminder
Drink water reminder
Date Sync to phone
Goal Achieved Reminder
Data sharing Google fit and Apple Health
Message Reminder
Message Push
Multi-language display: English, German, French, Spanish, Japanese, Chinese, Italian
Caller ID Notification
Call Reject
Smart Assistant
Alarm Clock
Custom watch face
Do not disturb mode
Find Phone
Wrist Sense
Camera Control
Reset Device
Turn ON/Off
Metric and English switching
OTA Upgrade

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@jfjproduction.com”