Premium Quality Cellet OEM Plug in Auto Car Charger with Blue LED For Plantronics Discovery 640 / 645 / 655 / 665 / Voyager 510 / 510S / 520 / Explorer 320 / 330 / 340 / 350 Pulsar 590 / 590A / 590E / .Audio 910 / .Audio 920 [ Cellet Brand Retail Packaging ] This Premium Edition Vehicle Power Adapter lets you conserve the phone's battery Charge simultaneously in an operating vehicle without ever overcharging. Advanced BLUE XEON LED indicator Built-in original 34063 IC chip Innovative comfortable hand-grip design