This is a Chinese copy of the Pixie TX/RX. You couldn't build it yourself for the price of the kit. I paid £3.92 including free postage from Hong Kong.
It took about 1 hour to assemble. As normal, sometimes you don't get all of the correct parts with Chinese kits, I got 2 power connectors and 1 jack socket. Good job I had a spare 3.5mm jack socket in the junk box.
Connected a 40m antenna, headphones and a 12v battery supply.
Wow. Signals all over the place (OK, 7.023-7.026Mhz). Power output 800mw.
The specifications as advertised are shown below together with circuit diagram, bill of materials and PCB layout.