Features: 1. The bluetooth version: V4.1 + EDR. 2. Support caller number voice broadcast. 3. The operating frequency range: ISM band(2.4-2.48GHZ). 4. Wireless range up to meters. 5. Support hands-free, support SIRI, support music, support audio function. 6. Equipped with High-definition 2W speaker, and high-sensitivity microphone. 7. Built-in Powerful Magnet, it is convenient to take it off or fix it. With its Magnetic Clip, the speakerphone can be attached to your car's sun visor quickly and firmly. 8. Battery type: li-ion, 3.7v, 650mah Call time: 20hours Standby time: up to 1000 hours Charging time: 2-3 hours 9. Size: 130mm (long)*49mm (width)*15mm (h) Package Include: 1 x Bluetooth Car Kit 1 x Micro USB charging cable 1 x Visor Clip 1 x User Manual