Internet Cellular Group via Amazon offers the Funkwerk Dabendorf EGO Flash Bluetooth Hands-free Car Kit for $44.95 with free shipping. That's the lowest total price we could find by at least $12; other sellers start at $100. It features a 1.6" OLED display, voice recognition, caller ID, text message display with text to speech, DSP technology for noise and echo cancellation, and 3.5mm audio jack.

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Note: It includes a standard ISO wiring harness for installation in many European cars. American cars may require either splicing or an optional harness for installation.