Loong Newest Bluetooth specification version 4.0Support play mobile music， call number readingSupport hands-free， headset， AVRCP Bluetooth agreement standardSupport connecting 2 mobiles at the same time (choosable)， max keep a record 8 mobilesBuild-in DSP noise suppression and echo cancellation functionEquip with Hi-Fi 2W loudspeaker， high sensitivity microphoneOperating range up to 10meters (approximately 33 feet)Rechargeable battery with charging option from car charger or USB cableMultifunction Support:1. Answer calls2. End calls3. Reject calls4. Voice dialing5. Announce calling number6. Last number redial (double click phone button)7. Personal connectivity/ speaker switch8. Adjust volume (click volve button)9. Switch songs (double click volve button)10. Transmit mobile music， pod casts and directions from a GPS app11. Advanced multiuse-stay connected to two active Bluetooth devices simultaneouslySpecifications: Hold Time: About 20 hoursStandby Time: About 48 daysCharging Time: 2-3 hoursBattery: Lithium 3.7V， 650mAHMaterial: PlasticColor: Black， WhitePackage Included:1 x Bluetooth Multipoint Speakerphone1 x USB Car Charger1 x Micro-USB Cable1 x Clip1 x User Manualhttp://contestimg.wish.com/api/image/rating?name=b426702c7b8911e68b9c065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0