Blink™ is the wireless home security system that sends motion-activated alerts & HD video to your smartphone. No contract, no wires and batteries that last 2 years! Free cloud storage for ever.
*Two AA lithium metal batteries last up to two years, based on typical use of Live View, motion-activated recording, and two-way talk (only available on XT2). Battery life will vary based on device settings, use, and environmental factors. Use of two-way talk will reduce battery life.
https://www.amazon.com/All-new-Blink...-1-spons&psc=1