Product Breakdown:

1. MCU : ESP8266 or ESP8285

2. GPS : GPS Module VK2828U7G5

3. Battery : 500mAH LiPo

4. Accelometer:

5. Audio Out :

6. Audio In:

7. LoRa module : Semtech SX1272 / inAir4

8. Display : 16x2 LCD / OLED TBD