4.2Inch E-Paper Ink Display 300X400 Resolution Communication Black/White 2.4Ghz Wifi Bluetooth-Compatible Multicolor

Features: Integrated 16MB and 8MB PSRAM ensuring smooth operational for development projects. Supports 2.4GHz WiFi and Bluetooth-compatible with built in antenna. Ideal for applications requiring wireless communication and low energy Bluetooth-compatible connection. 4.2Inch reflective screen with 300x400 resolution provides clear visibility without backlight. ST7305 driver IC enable efficient black/white display with energy saving benefits. Include Double microphone array for noise cancellation, SHTC3 temperature/humidity sensing, and PCF85063 module. Perfect for voice recognition and environmental monitoring applications. Feature 18650 battery holder and backup slot with power modes. Memory card slot expands storage capacity for development files and image data. Specifications: Component:Metal+LCD Type:Without Battery/With Battery Resolution: 300x400 Size:Approx.92.5x70mm/3.64x2.75inch Package Includes: 1Pc E-Paper Display note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.