best long range rechargeable flashlight Brightest Flashlights High Lumens Intuitive Dual Switch Controls Its dual side switch system ensures fast Lumintop PK90 1500m Long-Range Rechargeable

Apparently, if the person could (mostly?) fold their arm back down they wouldve found the correct length

The lights operation is incredibly simple and straight forward

You can still use it with an 18650 battery if youd like, but 21700 batteries tend to have much higher capacity: a maximum of 5100mAh for 21700 batteries and a maximum of 3600mAh for 18650 batteries

These figures can pretty hugely vary from model to model, though it is worth pointing out that some companys equip their keychain lights with special lenses and reflectors that can sometimes direct and amplify lumen output meaning some of these models are more powerful than their lumen alone output would lead you to believe

Brightness and Output The battery size also influences the brightness and output of a flashlight