A pack of 2 led night lights. Around 4 inches long by 1 inch thick. Each requires 2 AA batteries which aren't included.
I bought these to light up my bedroom wardrobes. One on each door. There are a few ways to attach but I chose to use the velcro and so far they seem to be well stuck.
The light they emit isn't too bright but it's good enough to see well. They are motion sensor so each time I open the wardrobe door they would automatically come on for about 20 seconds or so and then auto turn off.
Very happy with this purchase. Recommended.