Technical Specifications:

HP Scanjet 3670 scanner
2.1 kg (4.62 pounds)

HP Scanjet 3690 scanner
2.1 kg (4.62 pounds)

HP Scanjet 3970 scanner
2.3 kg (5.06 pounds)

HP Scanjet 3670 scanner
286 x 464 x 53 mm (11.2 x 18.2 x 2.1 inches)

HP Scanjet 3690 scanner
286 x 464 x 53 mm (11.2 x 18.2 x 2.1 inches)

HP Scanjet 3970 scanner
297.7 x 476.5 x 65 mm (11.7 x 18.7 x 2.6 inches)

HP Scanjet 3670 scanner
USB

HP Scanjet 3690 scanner
USB

HP Scanjet 3970 scanner
Hi-Speed USB

HP Scanjet 3670 scanner
1200 dpi

HP Scanjet 3690 scanner
1200 dpi

HP Scanjet 3970 scanner
2400 dpi

200-240 V 50 Hz
Continental Europe, United Kingdom, Australia

100-240 V 50 Hz/60 Hz
rest of the world

HP Scanjet 3690 scanner
244 x 430 x 39 mm (9.6 x 16.9 x 1.5 inches)

HP Scanjet 3970 scanner
255 x 430 x 39 mm (10.0 x 16.9 x 1.5 inches)

HP Scanjet 3690 scanner
scanner 0.85 kg (1.87 pounds)

HP Scanjet 3970 scanner
scanner 0.90 kg (1.98 pounds)

Power requirements
12.0 VDC, 340 mA, 4.22 watts (supplied by scanner)