Energizer showcases Energy 500 rugged smartphone at CES (pictures)

LAS VEGAS -- Well-known for its batteries, Energizer showcased prototypes of its Hardcase series of smartphones during CES 2015. Though there are four altogether -- two feature, two smart -- with the highest-end being an Android 4.4 KitKat handset called the Energy 500.

All of the devices sport a rugged, military design that is very durable.

Though thick, hefty, and heavy to hold, the 500 is dust- and waterproof enough to satisfy IP68 standards.

To keep water out, all the ports in the 500 must be securely sealed.

On its edge sits a volume rocker and shortcut camera launch key.

The 500 has a 3,000mAh battery that Energizer reps say last twice as long as the Apple iPhone 6.

The handset (left) also has a 1.3GHz quad-core MediaTek CPU, a 13-megapixel camera, and a 5-megapixel front camera. Energizer also has the more scaled-down 400 (right) phone. For more on CES 2015, read CNET's full coverage here.