Jabra Bluetooth Speakerphone Car Kit (Black) [Frustration Free Packaging] Easy to install and use. High performance full-duplex audio with noise reduction and echo cancellation. Bluetooth 2.0 with eSCO Supports the following features: Reject Calls, Voice Dialing, Last Number Redialing, Mute, Auto-Pairing, Auto Off 10 hours talk time and 23 days standby time Weight 84grams. L 124mm x W 56mm x D 24mm