Casio G-Shock introduced some its most tech-savy releases last year and now they are set to introduce a new iteration. This is the GB-X6900B.

The design incorporates Bluetooth 4.0 and boasts a new 2.0 engine that allows a two way communication between the watch and your smartphone via a free app.

Due to be available come September 21, a trio of colorways will drop for ¥20,000 JPY (approximately $208 USD) each with compatibility offered via the iPhone 5, iPhone 4S, and Samsung Galaxy S4.