The HDV640 is a compact, high-resolution water-proof camera probe featuring an articulating tip that adjusts up to 240° viewing angle and four built-in bright LED lamps with dimmer to illuminate viewed object. It provides a glare-free close-up field of view. The SD memory card included stores more than 14,600 images. Video recording (up to 4 hours) with voice annotation. AV output for viewing images and video directly on a monitor. Video and images can be transferred to a PC via the SD card or USB output. An optional wireless transmitter allows you to transmit video up to 100 ft. (30 m) from the measurement point to your monitor.