Blink Video Doorbell + 2 Outdoor 4 smart security cameras (4th Gen) with Sync Module 2 | Two-year battery life, motion detection, two-way audio, HD video, Works with Alexa AOJEZOR The unique curved lumbar support

Blink Video Doorbell + 2 Outdoor 4 smart security cameras (4th Gen) with Sync Module 2 Two year battery life, motion detection, two way audio, HD video, Works with Alexa AOJEZOR The unique curved lumbar support The unique curved lumbar support design has strong elasticity and supplies forceful support for the spine to customers The wifi signal is stronger and the transmission distance is increased by 70%。 【Two way Audio and APP Online Watch】 Wireless outdoor camera is equipped with a microphone and speaker allows you to talk to the person in front of the camera through the APP。 【1080P HD Video & Spotlight Color Night Vision】 Outdoor wifi camera has 130°wide angle lens with 1080P full HD video quality aslo built in infrared light and dual source white light pight for either spotlight colorful or infrared superior night vision up to 23ft(7m) even when it's pitch black