OK to charge BT headset with higher current charger (but same voltage)?

[Special K]

I have a Samsung android phone with a 5V/700 mA micro USB car charger. I also have a Moto BT headset that came with a 5V/550 mA micro USB wall charger but no car charger. Can I charge the BT headset with the higher current Samsung charger, or will that damage the headset? Or is 700 mA the max current rating, and the BT headset will only draw as much as it needs? It would be nice to only need 1 car charger since both the phone and the BT headset are micro USB.