This fits your .

CPU:( Smart bracelet Chipset)NRF52832 QFAA,

(Heart rate and blood pressure chipset)HRS3300

HEADSET CPU:RTL 8763BFR

RAM:512KB+16KB
SpeakerBuilt-in:Ø6MM 8Ω/0.7W speaker x 1
MIC:Yes
G-sensor:yes
Bluetooth Built-in:(Built-in)-BT 5.0

Operation System：Nucleus
Calories：Support
Camera Remote-Control：Support
BT Call：Support
BT Music Player ：Support
Time Sync：.Support
Call History：Support answer and recall last one
Anti-lost：Support
Redial：Support
Sleep monitor：Support
Steps：Support
Hea rt rate：Support
Bluetooth Headset：Support
Bloo d pressure：Support
Alarm：Support
Siri：Support
Waterproof：IP 67
Language：Default China and English（Multi language support）
"Smart Phone Information notifcation：
Gmail, CNN APP, ZAKER LINE, Facebook, Instugrate,Facebook Message QQ,V Message, /wechat 360"

There may be discrepancies between the medical test function and the professional test function of this product.
Please do not use this product as a professional medical device.
If you want more accuracy, you can often compare the tests.

VRfamily Bluetooth 5.0 Headset and Fitness Activity Tracker Watch Waterproof Smart Fitness Band with Step Counter Calorie Counter Pedometer Watch - BL4WMRTYM