My 15 year old sister is crazy about Dr Who so I thought this little charm would be a great thing for her Christmas stocking when we all got together. She loved it and strung it to her cell phone right away. It randomly lit up throughout the day so everyone was pleased and found it kind of funny that her butt pocket would occasionally light up and flash. It's pretty bright so you'll have to be okay with this thing attracting attention where ever you put it.