Voice Tracker I Voice Tracker II Voice Tracker III
  $279 $360 $470
Nominal Range for meeting recording or voice control 30 ft 25 ft 35 ft
Nominal range for high accuracy full vocabulary ASR 3-4 feet 3-4 feet 4-5 feet
Frequency Response 200Hz-7,000Hz +/- 6.0 dB +/- 6.5 dB +/- 2.6 dB
Number of mic elements 8 6 8
Audio output connection 3mm mic level
Stereo
USB adapters available
USB and analog audio thru 3.5mm cable 3.6mm mic level
Stereo
USB adapters available
Built-in AEC No Yes No
Mute button No Yes No
Dimensions 18″ x 4.5″ x 1.5″ 11.5″ x 1.5″ x 1.25″ 22″ x 3.25″ x 1.5″
Power requirements 6V DC wall supply included Powered by USB 6V DC wall supply included
Ceiling and wall mount Built-in Ceiling mount included Included
  Buy Voice Tracker™ I Buy Voice Tracker™ II Available in August