1.Easily add Bluetooth to your car audio systems, home stereos, speakers, wired headphones via the auxiliary 3.5mm AUX socket - Minimal footprint slim design with 3.5 mm plug. Plug and play, easy setup, one button operation, clear status indicator. 2.Latest version 5.0 of Bluetooth wireless communication standard, No audio lag/latency, Noise cancelling, improved speed and range, dual audio and backwards compatible 3.CVC 8.0 Noise Cancellation and DSP technologies eliminate echo and block out intrusive background noise and create lossless audio CD-class quality music. 4.Hands- Bluetooth call and navigator voice via built-in microphone; 4-hour continuous work via the built-in li-ion rechargeable 140mAh battery Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.