1.High-performance version of Bluetooth chip V5.4, stable output performance2.Voice broadcast throughout the whole journey, never miss any calls3.Automatic switch machine, save effort and worry4.1000 Mah battery, 500 hours of battery life5.The continuous talk time is about 10 hoursCharging time: about 2 hours Talk time: about 30 hours Standby time: up to 500 hours Built-in digital power amplifier, greatly increase the volume and sound effect Advanced multi-point connection, support two mobile phones online at the same time Built-in DSP noise suppression and echo cancellation function (CVC8.0 dual noise reduction technology).Bluetooth transmission distance: 10M Speaker: 42W, high-definition stereo sound Model Name:Bluetooth Mp3 SpeakerSpecial Features:Sun visor Bluetooth hansfree Car KitItem Type:BLUETOOTH CAR KITItem:Bluetooth Music ReceiverBluetooth handsfree car kit:Bluetooth Mp3 SpeakerBluetooth 4.2 audio adaptor:car wireless audio adpaterSun visor clip:Bluetooth Sun visor SpeakerAuto Stereo Mp3 Player:Wireless Sun visor Clip Audio AdapterSupport Waking up SIRI:for IOS IPhone Phones Ipad onlyWith 2W Hifi Stereo Speaker:with loud speakerColour:BlackMaterial:ABSPackage Contents:1 x Bluetooth speakerphone1 x Metal clip1 x USB charging cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.