Main control chip: STM32H750VBT6 Screen specifications: 3.5-inch 320x480 resolution IPS screen Power supply: USB-C power supply, lithium battery power supply Battery capacity: 1000mAh Battery life: 3 hours and 40 minutes<br><br>Interface: TF card holder, USB-C, USB-A, RS485, RS232, TTL, CAN, I2C, SPI, Encoder, PWM Charging indicator: red when charging, off when full Operation indicator: flashing red Buttons: alpha key (power on, power off, confirm), beta key (return) Interaction method: touch Note: If you are not professional for technology, please don't buy this product Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly, Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. The color of the harness is random and cannot be specified. Colour:As Shown Material:aluminum alloy<br><br>Package Contents: 1 * STM32H750 core board<br><br>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.