Google analytics for ECommerce, enables the measurement of user interactions with products on ecommerce websites across the user's shopping experience, including: product impressions, product clicks, viewing product details, adding a product to a shopping cart, initiating the checkout process, transactions, and refunds.
This site uses the viewport meta tag which means the content may be optimized for mobile content.
Open graph description entity tag
Any offered product or service. For example: a pair of shoes; a concert ticket; the rental of a car; a haircut; or an episode of a TV show streamed online.
Sites who has this tag are verfied by google to use WebMaster tools