Features:Portable， lightweight & easy to useOperating frequency: 2.4GHzInput Power: DC5VColor: Black & SilverSize: 10cm x 5.5cm x 2.1cmWeight: 63gBluetooth Version: 2.0Powered By: Solar Energy or Car Charger Perfect design for enabling you to wirelessly answer/reject/end a call on your Bluetooth-enabled mobile phoneCan keep your eyes on the road & your hands on the steering wheelTruly keeps you handsfree， so that you can answer phone calls on a driving trip safelyAdvanced noise & DSP echo cancellation， enabled good reception on every single callCan be attached to the sun-visor or windshield with the clear plastic holder or window mount suction cups providedBuilt-in high intelligent microphone and powerful speakerSupports TTS (Text to Speech) & voice dialing (if your cell phone support this function)Supports phonebook and call backVisualize incoming call numbers on the screenSaves your cell phone contact list via Bluetooth for the greatest convenienceThe plastic holder & suction cups are strong enough to keep your Bluetooth car kit safely in the right placeUSB port for software upgrade and chargingOvercharge protection & over discharge protection Package include:1 x Bluetooth Handsfree Device for Car1 x USB Cable1 x Car Charger1 x Suction Bracket1 x User Manual