I will develop the wrist band, wearable device, AWS iot products

Thanks for sharing your project.

As I'm a Senior Embedded System engineer, I have rich experiences in many Arduino systems development and programming over 10+ years.

Especially, I had developed many projects using Arduino, 3D printer, GSM/GPS/GNSS/GPRS module, Attiny, Atmel, SAMD, Wifi, BLE/Wifi such as ESP32, ESP8266, Lora modules & Lora wan, various sensors and LCD modules.

• GPS Tracker
• AWS, MQTT, Cloud IoT products

Also, I can design circuits & PCB and I have Arduino Uno, Mega2560, Nano, ESP8266, ESP32, ESP-EVB, SIM800, SIM900, SIM7000, SIM7600 modules.

I already did:

• Super Computer
• Lighting Dimmer
• Home automation products using various Microcontrollers
• Smart gateway
• Child Tracker
• Bluetooth Speaker
• Wrist band, Smartwatch
• Wearable Medical Monitor
• Robot car
• Various GPS tracker using SIM800, SIM900, SIM7000, SIM7600, SIM808, GPS module

and many more.

Also, I have Arduino Uno, Mega2560 board, ESP32, ESP8266 board, various STM32 development kits, various BLE development kits, various sensors.

So, I can implement all of your idea on a breadboard.

If you need, I can prototype PCB, and I will test the firmware on the 

Best regards.