Motorola H505 Bluetooth Headset (Black) [Bulk Packaging] Ergonomic earhook with improved back housing design to form fit to your ear; reversible for comfortable wearing Multi-function button to control 3-way calling, call start and end, hold, mute Blue LED light to notify when the headset is in use Compatible with cell phones embedded with Bluetooth version 1.2 or higher; can also be used with Bluetooth-enabled PCs Provides up to 8 hours of talk time and up to 150 hours of standby time