This is an interesting gadget for everyday use, but it falls into the category of things you buy and then forget about. You can attach it to your keys, your dog's or cat's collar, or a bag or pouch. I tested how it works – after 3 hours of charging in the sun, it shone quite well, although the declared 10 hours of operation seems exaggerated. The bright light lasts only 2-3 hours, and then the bulb barely glows. On the plus side – it charges itself and can be reused, unlike single-use fishing glow sticks. On the downside – the light is not very impressive. In summary: you buy it, forget about it, are happy to have it in your EDC set, and move on with your life. Dimensions: height 5 cm, width 1 cm.