【Large 3.97" HD Display】Features a sleek, modern design with a high-definition screen for clear viewing of visitors. 【Multilingual Support】Offers 12 language options including English, Chinese, Russian, French, Italian, German, Japanese, Korean, Czech, Turkish, and Arabic. 【Advanced Night Vision】Equipped with super night vision functionality for discreet, no-light, no-heat surveillance in complete darkness. 【High-Quality Camera】Boasts a 2MP high-strength alloy peephole camera with a wide-angle lens for comprehensive coverage. 【Durable Construction】Features an extra-large, thick 304 stainless steel mounting plate suitable for door thicknesses of 35-80mm and peephole diameters of 15-30mm. 【High-Definition Recording】Captures video in 1080P resolution, with internal storage supporting 720P. Specifications: Screen: 3.97" LCD screen with 480x800 resolution Camera: 2MP Video Quality: 1080P capture, 720P internal storage Battery: 1400mAh rechargeable lithium battery (3.7-4.2V) Charging: Type-C interface Indoor Unit Dimensions: Approx. 135 x 76 x 13mm Outdoor Unit Dimensions: Approx. 40mm diameter, 10mm thickness Door Compatibility: 15-30mm peephole diameter, 35-80mm door thickness Storage: Supports SD card (8GB minimum, 16GB or 32GB recommended, Class 10 or higher) Languages: 12 languages supported Material: 304 stainless steel mounting plate