Creative Wrls Headphones Se 2300 Stylish Comfort Package Contents - Creative Wireless Headphones SE2300, Creative Wireless Audio Adapter CB2490, Carrying Pouch, Power (100-240V) adapter, USB Charging Cable (For PC and AC charging), User's Guide Dual charging convenience Bluetooth Specifications - Bluetooth v1.2, Class 2 radio, up to a distance of 10 meters (32.8 feet) Bluetooth Profiles - Advanced Audio Distribution Profile (A2DP), Audio Video Remote Control Profile (AVRCP) Battery - Built-in rechargeable Polymer-Ion battery (rechargeable)