Plantronics Discovery 655 DSP Ultimate Bluetooth&reg; Headset with DSP for all Bluetooth Enabled Phones [Bulk Packaged] Compatible with most Bluetooth v1.1 and v1.2 capable devices. DSP Technology Charging carrying pocket and AAA charger, mini USB adapter and cable, and visual indicators such as missed call and low battery Bluetooth Version 2.0 Ultra lightweight, at only 9 grams