Camera web DS-U04 4 MP type A interface, supporting USB 2.0 protocol. Plug-and-play, no need to install driver software, built-in microphone with clear sound,AGC for self-adaptive brightness, 3.6 mm fixed focal lens, Audio Sampling Rate 16 kHz, Operating Conditions -10 °C to 45 °C, Material Plastic,Dimension 80.16 mm × 48.6 mm × 42.18 mm,Weight Approx. 89 g.