4-inch IPS touch screen introduction,170-degree ultra-wide viewing angle,Excellent display performance, high contrast, high viewing angle Capacitive 5-point touch screen,Supports 5-point sensitive touch, deep integration of intuitive operation and fast response, making development efficient and convenient Built-in self-developed third-generation ISP3.2, supports 5 million pixels, HDR, WDR, multi-level noise reduction and other image enhancement and correction algorithms It has powerful encoding performance, supports intelligent encoding, and saves bitrate according to the scene. It saves more than 50% bitrate compared with the conventional CBR mode. It can not only shoot high-definition pictures, but also has smaller video size Built-in 16-bit DRAM DDR3L to meet demanding memory bandwidth requirements Name:4-inch IPS touch screen 720x720 resolution:720x720 Communication interface:RGB666 screen size:4 inches display panel:IPS Touch type:capacitance touch chip:GT911 brightness:400cd/m² Contrast:1000:1 Viewing angle:170° Color gamut:68% NTSC (The product printed words may vary depending on the batch, but this does not affect use) Type:A:Without Bluetooth WiFi/B:with Bluetooth WiFi Color:As Shown Material:ABS Package Contents: 1 * Smart 86 Box Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.