This is a smart weather clock product that obtains network weather data based on the product's location, displays weather information, 3-day forecast weather information, time and date, alarm function, temperature and humidity data. Each host supports connecting multiple slaves (up to 3 slaves) to display on the APP. You can place the slave indoors or outdoors, and the collected data be transmitted and displayed on the indoor host. You can configure and control through the mobile phone APP. You can view weather data and indoor/outdoor historical temperature data on the indoor host and APP. Name: Weather Clock Output: USB-A 5V-1A Input: Micro-USB 5V-2A Communication frequency: 433.92MHz Communication distance: 80 meters (open outdoor environment) Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Colour:Black&White Material:ABS+PC Size: 160x23x160mm Package Contents: 1 x Host 3 x Sub-machine 1 x Plug 1 x USB charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.