How can Í adjust the barometer?

Tech Specs:

Altimeter:

Yes 

Barometer:

Yes 

Timer:

Yes 

Chronograph:

Yes 

Thermometer:

Yes 

Digital Compass:

Yes 

Declination Adjustable:

Yes 

Buoyant:

No 

Bubble Level:

Yes 

Backlight:

Yes 

Low Battery Indicator:

No 

PC Compatible:

No 

Waterproof:

Resistant 

Backlight/ Electroluminescent:

Electroluminescent 

Alarms:

2 

Battery Type:

CR2032 

Recommended Use:

Any outdoor sport 

Warranty:

1 year 

Country of Origin:

China