Instruction Manual

phone, or click the camera button to take photos.
P. waterproof
This product is waterproof grade IP68. It can be worn when washing hands, raining, showering,
swimming, bathing.
Q. Physiological reminder
This function can timely push warm reminders according to users' information of different
physiological periods.
IV Matters needing attention
1. The adapter with charging voltage >5V and charging current >2A is prohibited. The charging
time is 90 minutes:
2. Do not charge in case of water stain;
3. This product is an electronic monitoring product, which is not used as a medical reference, and
the data is for reference only;
4. Blood pressure test method: please keep your body relaxed and still during the test, make sure
the watch is at the same height as the heart, and keep silent during the test;
5. Photoelectric sensor is a highly sensitive component, so it should be careful of hard objects.
Wearing for a period of time , there may be sweat, dust adhere to the surface which can be
cleaned regularly by soft cloth.
V frequently asked questions
Q: how will the upgrade failure be handled?
A: if the initial upgrade fails, please reconnect the device of "Dfulang" in the APP, and the system
will automatically remind you of the upgrade
Q: why is the heart rate (sleep) test not accurate?
A: first of all, the bracelet device monitors human activities through electronic sensors. It is a
consumer product. It is normal for errors to occur and please treat the data objectively
Q: where can I set APP permissions?
A: android phone - setting - permission management - find the "H Band" app - set trust this
software.
1. If the phone is installed with security management or cleaning acceleration app, set the "H
Band" to white list (trust list)
2. In the permission management program of mobile phone system, please set "H Band" as the
trust application, and the functions such as caller ID need to get permission to realize the
function.
Q: how do I set the time display?
A: the device synchronizes the display mode of mobile phone, and the mobile phone is set to 12
hours, then the device is set to 12 hours.。
VI Basic parameters
Main control chip： NORDIC52832
Photoelectric sensing： PD70-01C-TR7