Casio's iPhone-friendly G-Shock finally out, will adorn wrists for $180

It seems Casio's G-Shock GB6900 hasn't been mindful of its own raison d'être, turning up much later than expected. After making its first appearance way back in March 2011, rolling through FCC in July the same year, and then reportedly getting stalled by floods in Thailand, the Bluetooth 4.0-packing smart watch is finally available stateside for $180. Tardiness notwithstanding, the wearable gizmo is typically defiant of shock and water. However, its hero feature is hooking up with your iPhone...