Nevertheless, Zik said the information that Energy Points provides to businesses is the best currently available.

FORBES: Apples to Apples: Comparing Sustainability Projects' Cost And Environment Benefits

The Meizu MX 4-core, Toshiba U845W and Parrot Zik headphones all get the proper review treatment.

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Under the elegant design of Philippe Starck, the ZIK Parrot by Starck Bluetooth headset features high-end technology.

ENGADGET: Parrot reveals Starck-designed Zik Bluetooth touch-activated headset, Zikmu Solo wireless tower speaker (hands-on)

Even pairing the earphones with your smartphone is made easier with the Zik.

WSJ: Parrot Zik Headphones: Technologically Sound | Geek Chic

The difference, said Zik, is that GRI is a sustainability-reporting framework, whereas Energy Points helps executives make effective decisions by providing comparative analysis.

FORBES: Apples to Apples: Comparing Sustainability Projects' Cost And Environment Benefits

Some U.S. companies and universities are already using Energy Points in pilot form and are beginning to move to the commercial phase, said Zik.

FORBES: Apples to Apples: Comparing Sustainability Projects' Cost And Environment Benefits

Also, its product portal allows customers to report to GRI and to the Carbon Disclosure Project, so the approaches are complementary, said Zik.

FORBES: Apples to Apples: Comparing Sustainability Projects' Cost And Environment Benefits

But these metrics are all incomplete, said Zik.

FORBES: Apples to Apples: Comparing Sustainability Projects' Cost And Environment Benefits

With the Zik, which can connect to your smartphone or computer wirelessly via Bluetooth (there's a wired option, too), you simply swipe up or down on the surface of the earcup to make your music louder or softer, respectively.

WSJ: Parrot Zik Headphones: Technologically Sound | Geek Chic