The phone has 16 gigs of storage, a microSD card slot and a micro USB 2.0 port. The Galaxy S5 Active, like the standard S5 is water resistant to 1 meter for 30 minutes and dust resistant.
The more rugged casing adds an ounce of weight and brings shock resistance for drops up to 3-4 feet onto a hard surface.
The S5 Active is currently exclusive to AT&T in the US and it sells for $199 with contract. It has dual band WiFi 802.11AC, Bluetooth 4.0, NFC, a GPS, 4G LTE, 16MP rear camera that can record 4k video, front 2MP camera and a removable 2800 mAh battery.