Built-in Vari-focal Lens 3.5-8mm (4-9mm Optional) AGC, BLC, Flickerless On/Off, Auto White Balance AC24V/DC 12V Dual Voltage (Optional) Built-in mini microphone (Optional) Audio output covered 10M (Optional) - Update: 2007-01-03

FEATURES: True Day & Night IR LED Bullet Camera LED soectrum: 850nm 24 IR LEDS Visible distance at ????Lux dark (IR on) 20 M Weatherproof (IP 57) - Update: 2007-01-03

FEATURES: LED spectrum: 850nm (30 deg) visible ??64 IR LEDs Visible distance at ????Lux dark (IR on) 40M Weatherproof (IP 57) Indoor & Outdoor Application - Update: 2007-01-03