Rear cycle light that came along with a headlight I needed. No way that this would have been legal to use in this country, and probably the same for the EU and many other countries, as several of the many flashing modes included blue LEDs. Took it apart, figured out the necessary part of the circuit, and disabled any chance of it ever flashing blue... before the end of the first day it arrived!

Feeling much the same as yesterday. Lots of coughing. Cycled okay again.