This is a genuine Bose Soundlink Mini Charger F12V-1.35C-DC AC Adapter 12v-1.35a OEM. It is an AC/AC adapter with a 1:2 connection split/duplication and a 5 ft cable length. The adapter has a round cable and an output voltage of 12V. It is designed to charge your Bose Soundlink Mini speaker and is an original Bose product.