Description: Specification. Name: Visual smart doorbell Material: ABS plastic + electronic components color: White Size: 10*14.5*3.5CM Weight: about 200g Applicable places: home doorbell Precautions. transition period. 1cm=10mm=0.39inch No retail packaging. Due to manual measurement, please allow 1-3cm error. Please make sure you don't mind before bidding. Due to differences between different monitors, pictures may not reflect the actual color of the item. Thank you. Specifications: Video CallEasy to deal with visiting guests, when someone presses the doorbell, the doorbell will push notification to the phone, and the owner can enter the phone video conversation interface, which supports sharing to up to 10 members at the same time. Capture screenStorage to the cloud, security protection drip. When a visitor presses the doorbell, it can capture the visitor's picture and save the record to the cloud, so that the cell phone APP can view the past pictures at any time, which is safer and more secure. Voice ChangeVoice change function, easy to deal with unfamiliar visitors! Upgrade the voice change function, when you are alone at home, you can use the voice change intercom function. Support original voice, male 2 voice modes can be selected. Portable InstallationCan be pasted and perforated. Support 3M adhesive backing, no need to punch holes, while supporting hole punch installation. No plugging, convenient and hassle-free. Long StandbyNo disassembly cycle charging. Built-in lithium-ion high-capacity battery, standby 365 days Say goodbye to the trouble of frequent battery replacement. Package Included: 1*Visual smart doorbell 1*Data cable 1*User Manual