2 in 1 USB optical mouse and VOIP hands free phone HM-F15-003 supports volume adjustment and most instant messengers, such as MSN, Skype, ICQ, Yahoo messenger and VOIP service.

Optical USB Moue:
1 USB 1.1&2.0 interface PnP.No need for driver
2 Comfortable, colorful,and stylish design
3 For both right-handed and left-handed users
4 Precise fracking with 800dpi optical Sensor
5 Service life:10,000,000 click

USB Volp phone:
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 Adjusting 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.