Model No : Iball 2.4GHz Wireless Trackball Presenter Mouse

Features 
Cordless freedom for flawless presentations
Built-in laser pointer
USB Micro Receiver
On / Off switch to save battery life
Ergonomic design fits comfortably in your hand
Left and Right button for Previous and Next slide
Can be used as mouse with Trackball and Left click button
Blank Screen button to draw attention towards the Speaker
Toggle button to switch between two applications

Interface : USB Interface

Buttons : 6 Buttons

Laser Pointer : Built-in laser pointer for presentation

Cordless Technology  : Digital 2.4GHz Wireless technology

Effective Range :  Approx. upto 100 feet

Batteries : 2 x AAA battery

OS Supported  : Plug-n-play with Windows 98SE / ME / 2000 / XP / Vista & 7

Bundled Accessories : USB Micro Receiver, 2 x AAA batteries, Carry Pouch

3 Years Warranty.