Features: *700TVL CMOS sensor, clearer pictures displaying. *4.3 inch touch screen, high definition and sensitive,easily see the real-time images. *With functions of two-way intercom, unlock, real-time surveillance, rainproof and night vision. *25 kinds of music rings optional. *Real-time outdoor surveillance for home security. *For the indoor monitor, quality PMMA and ABS material, for the outdoor monitor, zinc alloy and PMMA material, durable in performance.