Optical USB Mouse:- USB 1.1%262.0 interface PnP. No need for driver- Comfortable, colorful and stylish design- For both right-handed and left-handed users- Precise tracking with 800 dpi optical sensor- Service life: 10,000,000 click- Keypad operating force: 60+/-15gUSB Voip Phone- Built-in USB sound card. No need for any external audio device- Built-in Microphone and speaker with a unique echo-cancellation technology to ensure the crystal clear voice quality- Hands-free function- Hi-Fi sound quality with 16Bit 48KHz sampling rate- Built-in speaker and earphone connector for receiving call easily and protecting privacy- Support multiple voip applications. Easily?switch between various voip services.- Various chord music ring tone for incoming call- Adjusting volume with the increase and decrease buttons

USB  Optical Mouse  Hi-Fi  Speaker  Mic  VOIP  Mouse