Measures 4.000 in. H; 5.000 in. W; 8.000 in. D; miniature video time inserter; signal i/p composite video of 1 v p-p into 75 ohms; signal o/p composite video 1 v p-p able to drive 75 ohms; i/p-o/p bandwith: 3db down at 4mhz, 6db down at 6mhz; display is 9 digits of hrs, min & seconds