1280 x 720 HD video quality with ability to switch to SD stream to save on data usage | IR LEDs for b/w night vision out to 79 ft. | Microphone and high-quality, loud speaker for 2-way communication | Motion detection alerts | Wi-Fi based to work with home or workplace Internet router | Doorbell uses power from existing doorbell transformer or via supplied power if not tapping into existing wiring | Wi-Fi door chime requires on 2 AA batteries | Uses free Visto app for iOS and Android for live viewing, 2-way communications, push notifications, lock release with compatible locks (sold separately), plus works with unlimited number of other compatible devices (sold separately) | Live recording to the Cloud with subscription (sold separately) | Italian design