The Panasonic BB-GTA150E Handset is compatible with the BB-GT1500E, BB-GT1520E, BB-GT1522E and the BB-GT1540E Globarange phones. This additional handset allows you to expand your Globarange units by having additonal handsets around the home. The BB-GTA150E Globarange handset comes with an AC Adaptor, Charging Unit, Battery and Belt clip.