This little number turned up from Gearbest today in the postbag here in Spain. The "Subute 4 inch display fan" is a USB-powered fan which tells the time and temperature using a set of LEDs on one of the blades – and I have to say it does it very well. Instructions came in English and Chinese and all you have on the back is a small on-off switch – and a time set button.
Easy-peasy, press the time-set button for 4 seconds then single press for every minute you want to advance or long-press to go through hours and minutes. Leave the button alone for at least 5 seconds when you are done. The actual time/temperature image is clearer than shown here, I had to do a slow exposure to show the time without strobing effects. There IS a seconds hand too.
And here’s a thing – I just tested this here in Southern Spain, you can read the time in bright sunlight, handy for the beach with a USB battery pack. I guess it’ll be a little while before readers back home in the UK can try this. Here, temperature is nice but when sitting at the computer it can get a little stuffy – hence the fan is on my desk.