... lens, synchronization, automatic white balance 20M Waterproof Camera 1. Features:SG- 213 :1/4" Sharp CCD, 400TVL, 6mm lens, 24pcs φ5 IR ... lens, 24pcs φ5 IR, view distance 20M, with sun shield SG-143:1/3" Sony CCD, 540TVL, 6mm lens, 24pcs φ5 ...