Plantronics Pocket Charger Sleeve for Plantronics Discovery 655 and 665 Bluetooth Headset Plantronics Pocket Charger Sleeve (73921-01) for Plantronics Discovery 655 and 665 Bluetooth Headsets. The Plantronics Discovery 665 and 655 Bluetooth Headset slides into this Pocket Charger Sleeve then attaches the charger (mini USB or AAA Battery Charger) AAA Battery Charger or the mini USB Charging Port is Not Included. Requires the Battery Charger that came with your Device Originally (Not Included / Sold Separately). Pocket Charger Sleeve Only.