Motorola Moto Z series phones
Motorola Moto Z series phonesMotorola Official Blog (part of press kit)

Motorola has unveiled its much-awaited devices, the Moto Z and Moto Z Force, and now it has come up with a special promotional offer to attract prospective buyers in the United States. It is offering them unlimited Google Photos storage for free. The offer is only for the Moto Z Droid Edition (as it is called in the U.S.).

"Your Moto Z Droid Edition comes with up to two years of free storage at original quality in Google Photos, the smarter way to store photos and videos. They're automatically backed up, organized, and searchable, so you can find and share photos faster than ever," reads a statement on Motorola's official website (via 9to5Google).

The free storage offer is only for two years, which means the stored data will eat up Google Drive storage once the offer comes to an end. It is not known if the free storage facility will be given to Moto Z international version and other variants.

The Moto Z is made from military aircraft-grade aluminium and stainless steel, is 5.2mm thick, and sports a 5.5-inch Quad HD AMOLED display with 1,440x2,560 pixels (535 ppi pixel density). Under the hood, it has a Qualcomm Snapdragon 820 processor, an Android 6.0.1 Marshmallow, a 32/64GB internal memory expandable up to 2 TB1 via microSD card, a 4GB RAM, and a 2,600mAh battery with TurboPower that will enable users to get eight hours of power with 15 minutes of charging.

In terms of camera, it houses a 13MP main camera with f/1.8 aperture, laser autofocus, OIS, dual-LED (dual tone) flash features, and a 5MP front-snapper with f/2.2 aperture and 1.4 µm pixel size.

The Moto Z DROID Edition and Moto Z Force DROID Edition will be released in the U.S. starting this summer and will be made available on Verizon, Best Buy, and Motorola official website. The unlocked Moto Z (international version) will be launched worldwide in September.