Product Details Answer your door from anywhere in the world with this remote viewing Video Doorbell. Works as classic doorbell and chime connected indoor even without Wifi Choice of multi sounds Waterand dust resistant Two way talking Indoor bell powered by any USB device Outdoor bell powered by 2 x1200mAH rechargeable batteries (included) Sensor: 1/6.5in (approx.) Angle: 70° Resolution: 640 x 360 - 480P Stand-by: Approx 6 months Day/Night Vision: 850nm infrared, 5m (approx.) Supports Micro SD Card up to 32GB Local and Cloud Storage Wireless: WIFI 802.11b/g/n 2.4Ghz Bluetooth fast connection Smart push notifications right to your phone