Power off: When there is no USB external power supply, press "BUTTON C" for more than 6 seconds; or when there is no USB external power supply, set HOLD(GPIO4)=0 in the program operation to achieve power off. Features: ESP32--V3-02-Base, supports WiFi Built-in 6-Axis IMU IR transmitter Microphone Buttons, LCD (1.14 inch) Built-in Lithium Polymer Battery @ 200mAh Extendable Socket Built-in Passive Buzzer Wearable and wall mountable Applications: Internet of Things terminal controller Wearable devices STEM education product Note: Different batches may have different appearances, which does not affect functionality. Color: Yellow Material: ABS Package Contents: 1 x StickC PLUS2 IoT Development Board Only the above package content is included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in color between the item in the picture and the actual product. Measurement error allowance is +/- 1-3 cm.