Features:Noise ReductionBuilt-in echo cancallation and noise reduction technology, Bt 5.0 fast and stable connection.Rechargeable BatteryBuilt-in rechargeable large capacity 500mAh battery inside for 20 hours of continuous operation, standby time is 100 hours.Multiple LanguagesConnect two mobile phones at the same time, Support multiple languages switching (English, Chinese, French, German, Italian, Japanese, Spanish).Auto Shut Down and Auto ConnectAutomatic shut-down function, shut down automatically after disconnecting for five minutes. Automatic boot and connection function, Automatically turn on after closing the car door and connect to the last connected phone.One-click OperationOne-click for answering and ending phone calls, support Siri and Google Assistant function to control your phone, such as make calls or send messages. Keep your eyes on the road as you speak to ensure safety.Convenient Clip OnUse the integrated clip to secure this speaker phone to sun visor, seat belt, purse or anywhere you would like to enjoy hands free calling, listening to your favorite podcast, or streaming music. Specifications:Type: Bt Car SpeakerphoneMaterial:ABSColor: BlackQuantity: 1pcBt standard: V5.0+EDRBt frequency: ISM2.4GHz-2.48GHzBt working range: 0-10mBattery: Built-in rechargeable battery 3.7V 500mAhCharging time: 2-4 hoursWorking time: 20 hoursStandby time: 100 hoursSize: 12.8*5.2*1.6cm/5.03*2.04*0.63inWeight: 140g/4.94ozPackage:1* Bt Car Speakerphone1* USB Cable1* Steel Clip1* User Manual