Your wearable device is:
Blackview X2, Pairs to application "H Band"
1.3-inch TFT-LCD 240 x 240 pixels 2.5D curved Corning Gorilla Glass 3 display
Call and SMS reminders
All-day heart monitor
Waterproof to 5ATMs
10-day battery (45 days in basic mode)
260mAh lithium polymer battery (charging time about 2 hours)
9 sports mode
Compatible with iOS 9.0 & higher and Android 6.0 & higher
Firmware Version 70.01 (Up-to-Date)
I also came across the CPU manufacturer's SDK. The software is under QFAA-Bx0 I believe.
I hope my info is of use and that this can be implemented. Thank you!