The battery doesn't last for 20 hours as claimed, it only lasts for one hour in bright light and then gradually loses intensity until you can't see anything. Additionally, they didn't send me the model that emits blue light, which is something I needed. They sent me whatever they had left. Maybe I'll try it with different batteries because their batteries are terrible.

What can I say guys, I am satisfied because the price is affordable, good quality materials, it has blue LED, it also has low light and strong something that helped me with reading at night. Don't spend a lot of money on flashlights because this one has it all, even if it's Chinese.