Two way HD and Cleaning life, battery +VIECAM Alexa audio, wire free + Doorbell Video — or alerts video, 2 (Black) Sync chime Cloth wired app enabled Two year Blink and Module motion Brand: Unbrand Manufacturer Part Number: Brand: Unbrand Manufacturer Part Number: KVAC3687 Interchange Part Number: 73687 save the place anywhere from your smartphone with 1080p HD day and infrared night video and two way audio Connect to existing doorbell wiring or pair with a Sync Module (sold separately) to engage live view and two way audio on demand