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Pros: Battery Life, Brightness, Bulb Durability, Durability
Cons: None
Almost Perfect: 4.75 / 5
Great little keyring light. The battery lasts a long time with moderate use. Small and lightweight, roughly the size of a Swiss Army Classic knife. I would rate this at 4.75 stars only because the "lockout" feature is 100% required and it is a bit tricky to engage. If you don't use the lockout the light will stay on in your pocket and use up the battery very quickly.