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4K high-definition eye protection LIGHT SOURCE : 2.69 INCH LCD (COLD GRAY ADJUSTMENT) LUMINANCE LEVEL : 250 LUMENS (HIGH BRIGHTNESS AND TRANSPARENCY PHYSICAL RESOLUTION : 1280 * 720P INTERFACE : USB HDMI AUDIO OUTPUT POWER INTERFACE , REMOTE CONTROL FOCUSING METHOD : ELECTRIC FOCUSING SYSTEM : ANDROID 11.0 CHIP : HISILICON 352 WIRELESS SUPPORT : 2.4G/5G DUAL BAND PRODUCT SIZE : 124*124*220 COLOR : WHITE