Image sensor: Aptina 1/2. 5inch color CMOS; Resolution: 2560x1922 pixels (5M pixels); Pixel size: 2. 2um x 2. 2um; SNR: 38. 5 dB; Dynamic Range: 67. 74 dB. Frame speed: 14. 2fps at 2560x1922, 38. 3fps at 1280x960, 101. 2fps at 640x480. Interface: USB 3. 0 (compatible with USB 2. 0); Reduction lens: 0. 5X, fit to 23. 2mm eyepiece tube; 0. 01 mm calibration slide: 1mm/100 division. Adapters fit 30mm and 30. 5mm eyepiece tubes; Dimensions: 68mm x 68mm x 45mm (no reduction lens on); Operating Temperature: -10degrees; C to 50degrees; C; Power: Direct via USB port; Mounting: C-mount or eyepiece tube (23. 2mm/30mm/30. 5mm).