① Built-in USB sound card. No need for any external audio device.

② Built-in microphone and speaker with a unique echo-cancellation technology to ensure the crystal clear voice quality.

③ Hands-free function.

④ Hi-Fi sound quality with 16Bit 48KHz sampling rate.

⑤ Built-in speaker and earphone connector for receiving call easily and protecting privacy.

⑥ Call & cancel button for call convenience.

⑦ Support multiple VoIP applications. Easily switch between various VoIP services.

⑧ Various chord music ring tone for incoming call

⑨ Adjust volume with the increase & decrease buttons.

⑩ Support many VoIP service, such as Skype, VoipBuster, VoipStunt, VoIPCheap, VoipDiscount, SparVoip, Internetcalls, poivY, WebCallDirect, VoipCheapCom, FreeCall and NetAppel.