- Effective power : 2.5W x 2 ( RMS )
- Frequency respone : 180 Hz - 18 KHz
- power : USB + 3.5 mm
- Speaker : whole tone 2" 4 Ohm 3 W
- Signal to noise ratio : > 65 dB

- Resolution : 800/ 1200/ 1600/ 24000 dpi
- Scanning frequency : 3500 FPS
- Operating voltage : 5V
- Dimension : 120mm* 64mm* 38mm

- Resolution : 1000 CPI
- Scanning frequency : 3000 FPS
- Voltage : 5V
- Operating current :

- Spec : 55* 32* 19.4mm ( L* W* H)
- Support data transfer rate at : 1.5/ 12/ 480Mbps
-

- Max data transfer rate is 480Mbps
- Support up to 127 USB devices
- No driver installation required

- Max data transfer : 480 Mbps
- No driver installaton required
- Indicator Lights status 1 powwer LED

- Fully compliant with USB 2.0
- Max.data transfer rate is 480 Mbps
- Support up to 127 USB devices
- Plug and play
- Guarantee 1 year

- Black color
- Guarantee : 1 year
- USB support

- Resolution : 400 or 800 dpi
- Support : USB or PS/ 2
- Line length : 1, 35 m
- Guarantee : 1 year

- Resolution : 400/ 800 dpi
- Support : USB or PS/ 2 interface
- Cable length : 1.5 m
- Guarantee : 1 year

- Guarantee : 1 year
- Resolution : 800 dpi
- Support : mini USB receiver

- Support : Windows 98, 2000, xp, vista
- Guarantee : 1 year

- 2.4 GHz
- Compatible for over 30 feet
- Selectable frequency channels

- Frequency range : 20-20000Hz
- Sensitivity : 110dB -+ 3%
- Impedance : 32 Ohm
- Max.output power : 100mW
- Line length : about 1.5 m
- Plug : 3.5 stereo gold-plated plug

- Sensitivity : 108dB -+ 3 dB
- frequency range : 20-20000Hz
- Max.output power : 100mW
- Frequency response : 30-15KHz
- Line length 1.8m

- Air Flow : 28CFM
- Speed : 2300 rpm
- Noise level : 15 Dba
- Voltage : DC 5V
- Size : 220* 190* 25mm( L* W* H)