Bought a OTS T8007G watch, seek advice to adjust the time

1. four buttons upper left is 1 lower left is 2 upper right is 3 lower right is 4 First press 2 in the lower right corner of the box you can see the word H-SET, long press 4 until the drop sound, and then press 3 to adjust (pointer) 2. words is to press 2 until the lower right corner of the word SAT appeared, at this time, press 4 to choose, press 2 to choose what to adjust, press 3 to adjust (electronic)