Specifications Model: T31 CCD: 1/2.7 inch 1080p Scanning CMOS Sensor Lens/Visual Angle: 2.6mm @ F2.0/155 Video Coding : 1080P/15fps + 720P/15fps + VGA/30fps + QVGA/30fps + 1080P @ 1fsJPEG snap Input: 1 channel built-in microphone 48db Output: built-in speaker (8 1 w) Wireless network: 802.11b/g/n, support 2.4ghz and 5ghz dual-band WIFI Storage: 32GB TF card (TF card stores maximum support 64GB) and cloud storage (at use) Power supply: built-in 10,000mah lithium battery Power consumption: standby current 200uA Material: ABS Product size: 182*150*80mm Product weight: 670g/battery included Video doorbell Real-time door status monitoring. Powerful, high performance, low power dissipation processor inside Ingenic T31Z / Hisilicon 351 8EV300 Make communication clearer Calls HD video two-way voice, so zero distance communication. Whenever you want to see it No matter traveling, working or waiting for traffic lights, you can turn on the camera at any time to watch all the dynamics in the yard. < p> See people outside door-cell phone video call Contactless delivery for express and pickup, protect you and your family from COVID-19. Smart WiFi configuration Long-distance signal transmission, no need to open the door to know be the visit information. It can support multiple users to watch online at the same time. 2.4GHz and 5Ghz WiFi technology Support 2.4gHZ and 5GHZ dual-band WIFI, more flexible choices. Water proof Waterproof and durable, long life