Wireless Mini Trackball Keyboard

ACK-573W is especially designed for Windows, it has built-in trackball for mouse
emulation, wireless input with built-in infrared technology, 88/89 keys keyboard
with embedded numeric keypad and 12 dedicated function keys, and Fully
function of 104/105 keys.
 
Features: Designed for Windows
Built-in trackball for mouse emulation
Wireless input with built-in infrared technology
88/89 keys keyboard with embedded numeric keypad and 12 dedicated function keys
Fully function of 104/105 keys
Transmitter

Frequency: 38Khz
Effective angle: Within 45 degrees
Distance: 7 meters
Power: 3VDC(2) 1.5V AA batteries
Battery: 400 hours with typical usage
Receiver:

Keyboard interface: IBM AT, PS/2 compatible
Power: 5V DC, 300mA max. connected to host computer
LED indicator: Num Lock, Caps, Scroll Lock, Power LED and active LED
Sensor: High performance and high EMS immunity
Trackball:

Resolution: 200 DPI (X, Y Axis)
Signal output: Shift Sin wave (X, Y Axis)
Phase shift: 90 + 45 degrees
Tracking speed: 250mm/sec

Specification: Compatibility: IBM AT, PS/2, DOSV
Requires 2 PS/2 Ports
Key layout: 88/89 keys
Travel distance: 3.0 0.3mm
Travel to peak: 1.0 0.3mm
Peak force: 50 + 10 gm
Operating temperature: 0 to 40oC
Storage temperature: -10 to 60oC
Operating humidity: 10% to 85% RH
Switch life: 5 million life cycles
Electronic data: Transmitter--3VDC 15mA; Receiver-5VDC250mA
Dimension (without palm rest): 13.3"(L)x6.6"(W)x1.1"(H)
Weight: 0.72kg
Connectivity: IBM AT, PS/2
Compatible with Windows Vista, XP, 2000, ME, 98SE, NT 4.0