If the likes of Samsung, Google, and Apple each want to proclaim themselves as the “first maker of smartwatches,” they might have to re-think that title and settle for second place instead. That’s becauseCasio G-Shock already beat them to the punch by two years. From the debut of its first working prototype during the 2011 International Consumer Electronics Show (CES) in Las Vegas, G-Shock‘s Smartwatches have been widely available through its retailers worldwide. Certainly, 2013 is no different, as it launches the GB-5600B, a third-generation design featuring Bluetooth v4.0 wireless connectivity.

One other notable introduction for October 2013 is the MTG-S1000D-1AJF model, the first design from the so-called “MT-G Metal Twisted” series. Introduced during the Casio G-Shock 30th Anniversary “Shock The World 2013″ event back in August, the MTG-S1000D-1AJF and subsequent editions from the series will all be part of Casio’s push into the coveted premium timepiece market.

The  lineup for October 2013 will be available at select retailers in Japan in the weeks ahead, eventually hitting other distributors worldwide during the coming months.