1) Outline Dimension: 50mm Round 2) Interaction Method: Rotate, Press and Touch 3) Power: DC 5V, 100mA 4) Operation Temperature: -20-60C 5) Storage Temperature: -30-70C<br><br>System 1) OS: RTOS 2) CPU: ESP32-S3 240Mhz 3) RAM: 8MB 4) Flash: 16MB 5) Interface: UART/USB 6) Support 2.4GHz Wi-Fi. BLE 5. BLE Mesh Display 1) Size: 1.5 Inch OLED 2) Resolution: 466*466 3) Mode: IPS 4) Brightness: 1000 cd/m 5) Touch: Yes Colour:silver Material:Metal Due to different batches, there may be differences in product appearance and printed text, which not affect use<br><br>Package Contents: 1 * ESP32 S3 Development 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.