5Pcs 3-12V GSM Mobile Phone Signal Flashlight DIY Kit Electronic Circuit Training Suite
The first kit I assembled was missing a resistor, managed to use one from another kit and complete the set. Components are fairly common and should be easy to replace if missing from the kit. PCB quality is good enough for something like this. The blue LED seems to flash a little when I make a phone call. May try one with a red LED. Good for some soldering practice.
nice little project to pass the time.