Shipping is free! About this item: - Answer your door anytime, anywhere from your smartphone with 1080p HD day and infrared night video and two-way audio. - Experience up to two years of powerful battery life, custom alerts, privacy settings, and more. - Choose to save and share clips in the cloud with a free 30-day trial of the Blink Subscription Plan or locally with the included Sync Module 2 and USB drive (sold separately). - Designed for every home, go wire-free or connect to doorbell wiring to also sound your existing in-home chime. Without wiring, you can use your Blink Mini camera (sold separately) as an indoor plug-in chime. - Set up yourself in minutes with the two included AA lithium batteries then connect to wifi in the app. - Works with Alexa — access live view, two-way talk, receive motion and chime alerts, arm and disarm your doorbell, and more. - Includes one Video Doorbell, one Sync Module 2, and mounting kit (including corner mount, screws, and anchors).