Blue light charging indication: Blue light turns on when controllers are connected and charging Safety protection: It comes with protection from overheating, over-voltage, over-current, and short circuits PS4 controller charging station: Get a dual USB charging station for PS4 controllers Multiple charges: Can charge two controllers at once USB charge: Charge your controllers wherever you are with a USB plug Automatic power off: Once your controller is fully charged, your dock will automatically switch off | Sony PS4 Dual-Controller USB Charging Dock