This is a QWERTY keyboard and trackball combo, with USB interface receiver. and , simple and smooth. The ensures convenient typing, and you can control your devices on your couch.

Features:
Connection:
With included USB interface , no driver needed, and . connection, enjoy to 9 meters control.
:
The ensures convenient typing with keys and keys, and you can control your devices on your couch.
Optical Trackball :
Optical- trackball controller strengthens the experience and ensures flexible control of the laptop or HTPC when there is no .
Scroll Wheel Design:
The bottom right corner of the keyboard has the left and right keys and scroll wheel which can randomly turn between two directions.
Wide Application:
Compatible with Android, and Linux OS. Suitable for XBOX 360, for PS3, HTPC / , Android , Laptop, projector and so on.

Specifications:
Model Number: E30
Connection: 2.4G
Working Distance: within 10m
Amount of keys: 79 keys + Scroll Wheel + Trackball
Button : 8 million times
Tracking method: optical trackball
DPI: 1200
: 2 * AA (not included)
Color: Black, (Optional)
Main Item Size: 26.0 * 11.8 * 2.5cm / 10.23 * 4.64 * 0.98in
Main Item Weight: 223g / 7.87oz
Package Size: 28.0 * 12.6 * 3.5cm / 11.02 * 4.96 * 1.37in
Package Weight: 280g / 9.89oz

Package List: V3790S
1 * Keyboard
1 * USB Receiver
1 * User Manual