Bad processing. Due to the bad bonding, switching on and off is almost impossible. Almost not possible even with a small screwdriver. It's not worth the price.
Turning off the light is hard and on one the little off switch broke. On another one the battery fell out. I had to re-glue it back in place. They do however all work it's just shutting them off is difficult and may break.
Update on item. I lubricated the off switch and the switch now is much easier to turn off also the light is very bright.