Features:It can compatible with bluetooth-enabled mobile phones， laptop， tablet， or MP3 player， etc. The Bluetooth car kit enables you to take hands-free call and listen to music while driving your car. And it will remind you the calls and the time to rechargeBuilt-in speaker and microphoneDual standby visor music BluetoothReceive your calls clearly with its dual microphone technologyJust clip and go-on installation， no programs， no wireSimple wireless connection to existing audio gearWith HD VoiceWith the HD Microphone Strengthening noise cancellation technologyEnjoy handsfree calls when drivingWe recommended to make it fully charged before usingNormal full charging time is about 3 hoursSpecifications:Bluetooth Standard: Bluetooth Version 4.0 +EDRWorking Frequency Range: ISM 2.4 Ghz to 2.4 GhzTransission range: 10mBluetooth Profile: Speaker & Hands-Free ProfilesTransmitted Power: Class 2Wireless Connected Distance: 0-10 metersCharger Output: DC5-6V 400MABuilt-in Rechargeable Battrery: 3.7V 650MA (#BL-5B)Charger Time: About 3 hoursHands-free Working Time: About 17 hoursStand-by Time: About 1000 hours/ 41daysMaterial: ABSSize: Approx. 4.7x7x11.8cm/ 1.85x2.75x4.6"Mobile Phone MatchingPrior using the hands-free function， please match your Bluetooth enabled phone to the speakerphone. This device supports simultaneous dual phone connection. when you are willing to connect it to only one mobile phone， one time matching step is needed. If two mobile phone simultaneously， two times match steps is needed， please follow the below steps1) Make sure distance between your Bluetooth enabled mobile phone and Bluetooth speakerphone is less than 1 meter2) Turn on speakerphone3) Press and hold MFB for 6 seconds until hearing the indicating beep voice， and seeing LED indicator flash in red and blue color in turns. Now it is ready for matching. Meanwhile you will hear "Device is ready for match"4) Activate your mobile phone’s Bluetooth function to search for Bluetooth device5) Select "BT-LD168" from the list6) Enter the pre-programmed code "0000" and press "confirm" button. Speakerphones will standby， and LED indicator will flash every 3 seconds after a successful machine7) Go to your mobile phone main menu， and make sure speakerphone is placed within 10 meter near your phone without any obstacles. Now， hands free function is activatedNote: Speakerphone will turn off automatically after 2 minutes when it fails to match mobile phone， please repeat above steps to activatePackage Included:1 x Bluetooth 4.0 Car Kit Handsfree Speaker1 x USB Cable1 x User Manual