Extended battery life C 2 year battery life on two AA lithium batteries with a combination of two-way talk live view and motion recording. Double the usage of the XT on a single set of batteries when recording video. 2-way audio C Talk to visitors through the Blink app on your smartphone or tablet. Customizable motion detection C Use activity zones to choose where motion is detected so you receive the alerts that matter. Free cloud storage C Keep hundreds of clips stored up to a year with no monthly fees or service contract required. Works with Alexa C View live streams motion clips arm and disarm your system and set up smart reorders for batteries through select Alexa-enabled devices. Day and night coverage C Record and view in up to 1080p HD video during the day and with infrared HD night vision after dark. Use indoors/outdoors C Blink XT2 stands up to the elements. Place or mount it inside or outside for whole home security. Easy setup C No tools wiring or professional installation required.