Specification: Bluetooth V1.2 / EDR+2.0 compliant Adopting CSR Bluetooth solutions 12 languages software: English, French, German, Denish, Dutch, Italian, Russian, Spanish, Japanese, Korean, Chinese, Traditional Chinese Radio Characteristics: Bluetooth TX Power Class II , Class I Frequency: 2.402GHz ? 2.480GHz Operating range: (Class II) 25 metres; (Class I) 100 metres Data transferring rate: 1 ? 3 Mbps USB interface: V2.0 High speed Supporting Piconet and up to 7 slaves Supporting Operating System: Windows 98 / ME / 2000 / XP / 2003 LED status indicator for Power on/off, Paring mode Packing: Unit Weight : 7.3g Packing : Box, Blister, or Customized No.(s) of Units /Carton : 100 Accessory: Driven CD : 1 piece