For Garmin Forerunner 110/Approach S1/Approach S1W/Approach S2/Approach S3/Approach S60 10W Dual USB Wall Home AC Charger High Performance 10W Dual USB AC Home Wall Charger Adapter Dual USB sockets allow you to charge 2 devices at once. Simply use a compatible usb cable for your device to get charge up from this charger IC Chip recognizes a full battery & automatically switches to saver mode. Input: AC100-240 Volts Output: 5.0V ~ 2100mah