Kestrel 5400 Heat Stress WBGT Meter Orange 0854ORA SlashPro Black It is powered by 2

It is powered by 2 D batteries with a runtime of 10 hours

The design of the door allows for life-like simulation of setting the pry tool and actually prying the door open

Glock 45 SureFire X300

Its "Quick-Click" system also ensures effortless switching between Full Power

Kestrel 5400 Heat Stress WBGT Meter Orange 0854ORA SlashPro Black It is powered by 2As for weather reading features, they will be the same. You won't get a 'better' temperature reading, wind reading, etc, or even more readings than available on the 4400 4600 Still, the same quality USA made meter backed by a 5 year warranty. That being said there are some pretty outstanding updates. Flag warnings via loud buzzer & LED beacon! Bluetooth LINK works with PC Mac via Dongle Bluetooth LINK to Smartphones Mobiel Android IOS Takes 1 AA