Designed by ZecTrix Lab in China, the Note 4 is an ESP32-S3-based AI smart note with a 4.2-inch e-paper display and built-in voice input. The device is designed to display reminders, notes, clocks, weather, images, and custom templates, while the Note 4C variant replaces the monochrome display with a four-color e-paper panel.The device features 2.4GHz Wi-Fi and Bluetooth 5.0 connectivity, a microphone, a speaker, NFC, physical buttons, a USB Type-C port, a 2,000mAh rechargeable battery, and GPIO expansion for custom hardware projects.ZecTrix Note 4 / Note 4C specifications:
SoC – Espressif Systems ESP32-S3
CPU – Dual-core Tensilica LX7 up to 240 MHz with vector extension for AI/ML workloads
RAM – 512KB SRAM; 8MB PSRAM
Wireless – WiFi 4 and Bluetooth LE 5
