So tiny! Useful little LED lights (pretty bright... and white light, so not a soft yellow light like the tea lights). That photo below showing one lit is only one (like I said: they are bright). Ms Bette is lurking back there in the darkness... she likes LEDs.
Note: there is no on/off switch (once you remove the little tab that breaks the connection from the battery to the light, they are on). I was able to successfully replace that little tab on the few I tested, but one I was not able to turn off. But it's become my little test subject: so far it has remained on for 24 hours (though it is getting a bit dimmer).
Update: it's been 10 days and the little light is still burning!
Great for backlighting small spaces. Again: no switch or wires so you'll need to be able to get your fingers into whatever space you put them (to replace with another? at this price, they're not a pain to your pocketbook to replace before throwing a party). Approx. 5/8" diameter.
Set of 3.