1. Main control chip: ESP32-PICO-D4 WiFi/Bluetooth
2. IPS display: 80X160 0.96 inch ST7735 driver
3. IMU: Nine-axis sensor MPU9250
4. Clock chip: PCF8563
5. Touch button: TTP223
6. Battery: 301025 / 40mA rechargeable lithium battery (MPU92500 vibration)
7. Charging chip: TP4054
8. Extension/program download interface: 0.3-pitch 13pin FPC