Built-in Charging IC: Ensures efficient and safe battery charging. BAT Connector with Switch: Allows for easy battery connection and includes a switch to combine the battery and switch for more efficient energy saving. 24-Pin PFC Connector: Provides versatile connectivity options for peripherals. Extension IO Port: Enables connection of additional sensors, such as temperature and humidity sensors, for enhanced functionality. Compatible with XIAO Ecosystem: Seamlessly integrates with the XIAO series(Pre-Soldering Version) for versatile project development. ePaper Connector: FPC 24 Pin 0.5mm, Top Contact Battery Charge IC: ETA9740 Battery Connector: JST 2.0mm Switch: Battery Power ON/OFF Female Header: 7 Pin 2.54mm, Connecting to MCUs like XIAO Power Supply: support 3.7V Li-Battery (without battery) , XIAO Application: Smart Home Dashboard: Display real-time information such as weather updates, calendar events, and notifications from smart home devices. Energy Monitoring: Show energy consumption data from smart meters, helping homeowners track and manage their energy usage more efficiently. Security Alerts: Display alerts and notifications about security events, such as motion detection or door/window sensor activation. Smart Thermostat Display: Show temperature and humidity levels, as well as control settings for your smart thermostat. Digital Photo Frame: Create a WiFi-enabled digital photo frame that can display images from your smart home network. Color: Black Material: plastic Package Contents: 1 * Driver Board 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.