NOISE REDUCTION: This car wireless speaker is designed with intelligent noise reduction, effectively distinguish nonhuman noise, and automatically reverse noise, providing clearer calls. MULTI FUNCTION: This car handsfree speakerphone supports answer, hanging up and refusal with one button. And also supports streaming music, GPS app audio, voice control, language calls and more. Supports simultaneous connection of two mobile phones. WIRELESS CONNECTION: This car speakerphone with EDR provides strong and stable wireless connection for reliable hands free calls. EASY INSTALLATION: This wireless car speakerphone can be fixed on the sun visor with the back clip, easy to pair with smart phone, tablet and other devices. STANDBY TIME: This speakerphone for car features up tp 1,000 hours standby time and about 20 hours talk time.