This is an easy to set up wireless connection to the Harley Davidson Infotainment System that works with several different Sena headsets. It fully charges in about two hours and easily lasts a day. If necessary, it can be charged on the go. It also has a port to connect an MP3 player (or similar) so you can keep your entertainment on the go. So far, streaming wireless (GPS) directions and music to the Sena headset has worked very well.