Item Type: Video Intercom Doorbell Material: Zinc alloy Product Size: Approx. 12x10x2cm/4.72x3.93x0.78in Battery Type: Polymer lithium battery (Shipped with built in battery) Battery Model: PJ-KP-DC-1050100 Battery Capacity: 5000mah Package List 1 x Outdoor Host 1 x Outdoor Sub Machine 8 x Charging Cable 8 x Screws 1 x Hanging Plate 1 x User Manual 1High Definition: HD 1080P camera presents you with clear and realistic images, so you won't miss any important and detailed information. 2Main Function: Doorbell brings you convenience through wireless intercom, wifi remote monitoring and other functions, so you can check and communicate at any time. 3Remote Control: Doorbell support for Tuya electronic technology, supports intelligent control, and seamlessly connects with other smart devices to provide a stable home security solution. 4All Weather Monitoring: Automatically switch to infrared night vision mode at night, even in the dark environment can maintain clear visibility, bring you an excellent visual experience. 5Easy Operation: Simple installation and can directly replace the original doorbell, no additional wiring arrangement, easy and fast operation.