1. [High Performance] Car speakerphone high performance version chip V5.0, stable output performance. Auto power on off, labor saving and worry free.2. [Omnidirectional Mic and Voice control] Wireless car speaker omnidirectional microphone design, calls are as clear as face to face. Support for Siri voice control.3. [Full Voice Broadcast and Digital Amplifier] Multipoint speaker phone full voice broadcast, will not lost any calls. The built in digital amplifier greatly enhances the volume and sound effect.4. [Long Time Use] Car speakerphone has a built in 600mAh battery with 500 hours of battery life. The continuous talk time is about 10 hours, and the standby time reaches 500 hours.5. [Multi Point] Car speakerphone advanced multi point connection, support 2 mobile phones online at the same time. Built in digital signal processornoise cancellation function. (CVC8.0 double noise reduction technology)Spec:Item Type: Handsfree Car SpeakerphoneMaterial: PVC: V5.0Frequency Range: 2.4Ghz - 2.48GhzBuilt in Lithium Battery: 600mAh (included)Talk Time: Up to 10hStandby Time: Up to 500hpacking list:1 x Handsfree Car Speakerphone1 x Cigarette Lighter1 x USB Cable1 x Sun Visor1 x Manual