The Blink Outdoor 4 offers up to two-year battery life for around-the-clock peace of mind. Local storage not included with Sync Module Core.See and speak from the Blink app - Experience 1080p Hd live view, infrared night vision, and crisp two-way audio.Two-year battery life - Set up in minutes and get up to two years of power with the included Aa Energizer lithium batteries and a Blink Sync Module Core.Enhanced motion detection - Be alerted to motion faster from your smartphone with dual-zone, enhanced motion detection.Person detection - Get alerts when a person is detected with embedded computer vision (Cv) as part of an optional Blink Subscription Plan (sold separately).Save and share clips - While Sync Module Core doesn't offer local storage, securely store your footage in the cloud with a free 30-day trial of a Blink Subscription Plan.