Blink Video Doorbell + Sync Module 2 Two-way audio HD video \nThis item is in full working order and has been thoroughly tested to ensure it functions correctly. It includes all contents and accessories shown in the listing. The item has cosmetic marks consistent with normal use, but these do not affect its performance. Please refer to the photos for the item's cosmetic condition.\n--Answer your door any time and anywhere from your smartphone with 1080p HD day and infrared night video, and two-way audio. \n--Experience up to two years of powerful battery life, customised alerts, privacy settings and more. \n--Choose to save and share clips in the cloud with a free 30-day trial of the Blink Subscription Plan or locally with the Sync Module 2 and USB drive (sold separately). \n--Designed for every home, go wire free or connect to existing doorbell wiring to also sound your current in-home bell. Without wiring, you can use your Blink Mini camera (sold separately) as an indoor plug-in ch.