Suunto Core Alpha watch is tested according to MIL-STD-810H military standards.

Test Method 500.6 Low Pressure (Altitude) 
Test Method 501.7 High Temperature, operational 
Test Method 502.7 Low Temperature, operational
Test Method 503.7 Temperature Shock 
Test Method 507.6 Humidity 
Test Method 510.7 Dust
Test Method 516.8 Shock 
Test Method 516.8 Drop 
Test Method 521.4 Icing/Freezing Rain