Display resolution 320*240 pixels; Screen diagonal 2.8 inch 16 bits per RGB pixels; Resistive touch control Jog switch control; USB serial port control Optional TTL USART port (SW not yet implemented) on the internal PCB Linear power supply to avoid switching noise. Add port ESD protection to upgrade version(V0.3.1_E)<br><br>Material: ABS+metal colour: black<br><br>Package Contents: 1 x Host (with 3000mAh battery, 4 inch display) 1 x USB Type-C data cable 2 x 30cm ALSR100 SMA cables 1 x SMA-SMA connector 1 x Antenna with SMA connector 1 x Lanyard and touch plectrum 1 x 32GB MicroSD card(plugged in the host) 1 x touch pen<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.