Yes, there is a special category of G-Shocks with Bluetooth – such watches can be connected to a smartphone using the G-Shock Connect app [available for Android and iOS] [or G-Shock Move for running series]. Since wireless technology consumes quite a lot of power, most G-Shocks with Bluetooth are equipped with additional charging method and can also include solar power. You can check out the list on our website TOP G-SHOCK Watches with BLUETOOTH.