Dalian Chenrui Technology Co., Ltd.

Dalian Chenrui Technology Co., Ltd. is based in China and offers a digital door viewer with smart door bell functions and a multi-functional power bank. The door viewer features a 4.5-inch high-definition screen with 840×480 pixel resolution and tempered glass protection, a zinc alloy anti-prying camera with a 2.3 megapixel lens, and high-definition infrared night vision with a 160° wide angle and eight adjustable focal lengths. It uses a national patent external magnetic charging mode, includes a built-in flashlight power bank, and supports smart photo and video recording with TF card storage. The multi-functional power bank, model FPB108CR, uses a lithium-ion battery imported from South Korea with a typical capacity of 3.6V/3350–3600 mAh. It provides up to 1,200 minutes of continuous lighting and up to 1,300 minutes for the flashlight function, with both lighting and charging usable simultaneously. The unit measures 4.25 inches long by 0.91 inches in diameter with a water-drop shape, weighs 2.45 oz (69.5 g), and charges in about 3–4 hours via a standard Micro USB 2A cable. It features magnetic adsorption, adaptive smart charging, multi-protection design, and optional custom colors or corporate logos.