Features: Bluetooth V2.0 Wireless Headset Super light weight with 7 grams only Talk time 5 hrs & Standby time 100 hrs Support Headset & Hands free profiles Support Voice dial & Last call redial Audio Gateway for PC, PDA, and Cellular Phone (MSN, Net-Meeting & MP3) Specifications: Bluetooth Version Bluetooth wireless technology version 2.0 compliant Support Profiles Bluetooth Headset and Hands free Profiles Radio Frequency 2.4GHz ~ 2.4835GHz ISM band Transmitter Power Class 2 Effective Distance Up to 10 meters in open space Receiving Sensitivity -80 dBm Charging Power 5V DC / 500mA Stand-By Time Up to 100 hours Talk Time Up to 5 hours Battery Rechargeable Polymer Lithium-Ion battery Charging Time Approx. 2.5 hours LED Red, Blue Weight Approx. 7 grams Dimension 48 x 10 x 18 mm (L x W x H) Certification CE/FCC/RoHS Accessories USB Charging cable and Users guide. (Optional Travel Charger)