I have received it and cracked it open.
There’s some good news and bad news.
The bad news is that it doesnt use one of the common ESP chips (which I expected; amazon was bound to use a more custom SoC). It uses the MediaTek MT7697HN chip, which has an ARM core. This chip line, from the product literature is:
MT7697 is a highly integrated SoC which features a Cortex-M4 application processor, a low power 1x1 802.11b/g/n single-band Wi-Fi subsystem, a Bluetooth subsystem, and a Power Management Unit.
The application processor subsystem contains ARM Cortex-M4F MCU. It also includes many peripherals, including UART, I2C, SPI, I2S, PWM, IrDA, and auxiliary ADC. It also includes embedded SRAM/ROM.
Programming for this would be above my skill level if were even possible in the first place. (It may be?)
The good news is that it uses 4 standard load cells, and the molded area for their circuitboard looks big enough to fit an ESP8266 and a HX711 chip to read the load cells.
When I have time I’ll probably attempt replacing the board with an ESP and HX711 since I never intended to connect it to amazon anyway. For $15 you get a nice looking case and 4 load cells, so overall still not a bad deal.
Also slightly annoying, there are a whopping 20 screws holding it together. 8 of them are under the rubber feet pads, which involves removing them for access. Fortuinately they came off cleanly and can be reattached with double-sided tape.
Below is a photo album of the guts: