D21 Bluetooth Heart Rate Wristband Instruction
1. Long press the touch key for 4 seconds, users see the Welcome interface. It is touch key,
2. Short press the key to enter to the Device Management interface with power off icon at the
3. Long press to choose the function and short press to switch the functions.
Product Specification
Chip model, nRF51822 nRF51822( Cortex M0 16MHz)
Memory, 256K
Acceleration sensor, Three-axis acceleration sensor
Heart rate sensor, Green light static heart rate sensor
Display, OLED 0.66’’ 64x48 Dots
Motor, Cylindrical vibration motor
Key-press, Touch key
Battery, 80mAh
Notice
The wristband contains magnatic component, he who is installed a pacemaker, or have implanted
electronic devices, or metal, please do not use it.
Please stop using it when any discomfort symptoms happen.
If use substandard charging power supply, will shorten the battery life, and even damage the
battery.
We reserve the right to modify the User Manual without any notification. It is normal condition if
some functions differs from different app versions.
We reserve all the right for the final explanation .
Turn on/off the Wristband
please do not press the key with strong pressure.
top-left corner. Then long press the touch key to turn off the wristband.
Charging
Charger, voltage 5V, electric current 500MA-1000MA
Charging time, 30 minutes.
Connect the chrger with wristband as below.
Time
1. Battery power display
2. Date Display
3. Time Display
Heart Rate Interface
1. Heart Icon,long press the icon to start testing with beating.
2. Display the real time heart rate.
Notice：The heart rate testing data can not be used as medical data.
The time will a little longer for the first timetesting ,it is normal.
The best wearing manner:
1. keep a finger width between the wristband and ulna
2. keep the heart rate sensor clinging to skin
Pedometer
1. Pedometer Icon
2. Display the real time steps
1. Distance icon
2. Display the whole distance according to the pedometer
Calories Display
1. Calories icon
2. Display the real time calories
Palming bright screen
1. long press the touch key to turn on/off the function
Device Management
1. Turn on/off icon, the wristband can only be turned off in this
interface in case of the wrong operation.
2. Battery power icon
3. Bluetooth connection icon, this icon means Connected this icon means
Distance Interface
Disconnected.
4：Bluetooth name DFit
1. Aftet HPlus Watch APP Installation completed,please fill up your information such like
2. Wristband connect with APP;
3. Data graph
5. The last four letters in the MAC address is used for distinguish each wristband. For example as
above picture, the Bluetooth name is Dfit EEF2 found by App.
6.Software serial number :V1.80
APP download
Please scan the QR code below to download HPlus Watch APP,
Google play
App for foreign Android users
https://play.google.com/store/apps/details?id=com.richtechie.hplus
iOS
App for ios users
https://itunes.apple.com/us/app/hplus-watch/id1021512165?l=zh&ls=1&mt=8
Height、weigh、age、gender etc.
Click Bluetooth Device in the System Setup to enter the interface, pull the screen from the top
to bottom. Search and find the Bluetooth name, then click and connect wristband.
After connection, the date and time on the wristband will be updated automatically.
After connection, total distance,total steps, total calories, Min heart rate, average heart rate, max
heart rate, yesterday data and data summary will be shown on the ap interface.
4. Real time Heart rate
a. Bluetooth, used to connect wristband Bluetooth
b. Sync, used to sync wristband date
c. Incoming calls, when you turn on the function, the watch rings and vibrate with icon
d. Time reminder: Alarm clock, when you turn on the function, wristband will remind you
e. Sit notification, when you turn on the function, the watch will remind you to do some
f. Screen save timer, used to set up the time for screen bright.
g. Erase user data, used to erase the historical data in the wristband.
Start heart rate testing,it can record your heart rate for whole day.
5. Settings
Used to set up all functions on ap.
remind.
regularly.
exercise.
Warranty Card
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