Need part number for replacement remote

One week after installing my new roku ultra, my dogs chewed up the remote. It worked for a whole, but now it only works when it is plugged in ( usb charged). I can't seem to find the part number for the remote that works with the ultra AND is usb charged. I can find a battery powered one, but not the usb. If it is why more $ I will just got a battery powered one, but it would be nice to have the usb charged one as that is correct and more convient than batteries.