Plug & Play Bluetooth Handsfree & Streaming Audio Car Kit Plugs directly into your vehicle’s MP3/AUX input to allow handsfree phone conversations to play through your speakers Voice announce caller ID says the number of the person calling One touch voice dialing with most Bluetooth cellular phones DSP echo cancellation ensures a crystal clear conversation even in noisy vehicles Rechargeable lithium-ion battery provides 5 hours of talk time and 24 hours of standby Includes switching audio splitter, AUX extension cable, USB charging cable and car charger 2.1 Bluetooth compliant; support profiles: HFP & A2DP