Wireless Visual Intercom Doorbell. 4.3-inch IPS screen 2.4 wireless visual intercom doorbell provides a clear images. Night Vision with 940nm IR Leds, black and white image, you can still see clearly at night with low-light environment. 2-Way Intercom. Built in microphone and speaker, it supports 2-Way audio communication. Outdoor doorbell rechargeable battery 800mah (battery low consumption) and indoor monitor rechargeable battery 400mah (connect power supply for long-time working) Extra storage supports max up to 128G, for Video recording and saving. Colour:black Material:plastics With external antenna, the signal be longer than ordinary models. 13 Multi-Languages: English, Chinese, Japanese, Korean, Russian, Arabic, Vietnamese, Spanish, Portuguese, Polish, German, French, Italian. Display Screen: 4.3 inch Power Supply: Type-C, DC5V/1A Audio Information: Built-in speaker, microphone Working Humidity: 10% -80% SD Card: Supports up to 128GB (FAT32) Wireless Mode: 2.4Ghz frequency