Software maker Westunitis Co. said Monday it will launch one of the world's lightest glasses-type information devices in July.

Wearers of the "inforod," which weighs only 48 grams, can see how to use equipment or a certain part of a product and learn about procedures when they look at it through a display mounted on the right lens of the glasses.

The Osaka-based firm, founded in 1991, plans to market the inforod to medical institutions and manufacturers as the product is aimed at reducing the risk of making errors in complicated work.

Westunitis also hopes to sell the product to individual and overseas customers by enabling it to search the Internet.

The inforod carries a price tag of ¥135,000. Westunitis aims to sell 5,000 units before the end of March 2015, and 10,000 units during the following fiscal year.