Features: 100% brand new and high quality Support caller number voice broadcast. The operating frequency range: ISM band(2.4-2.48GHZ). Wireless range up to meters. Support hands-free,support Siri,support music,support audio function. Equipped with high-definition 2W speaker,and high sensitivity microphone. It is convenient to take it off or fix it. With its Clip, the speakerphone can be attached to your car's sun visor quickly and firmly.