Model Name : Sliver II Brand : Motorola USB Support : No Design : In-the-ear Wired or Wireless : Wireless Color : With or Without Mic : With Mic Bluetooth Version : Bluetooth 4.0 Bluetooth Range : Up to 300 feet Talk Time : Up to 5 hours Discreet, custom fit for comfort HD-audio for crystal-clear calls Chargeable case for extra power Model number : HZ 770