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Fenix puts its own spin on the 10180 , this time wrapping a rugged, IP68-rated stainless steel shell around the compact battery.

Main Features: ● Extremely lightweight, compact and portable available in 5 colors ● High performance LED produces 45 Lumens on High ● Built-in Li-ion battery provides a runtime of up to 48 hours

Best : Carry Your Everyday. By David Ferraro Last updated Dec 8, 2017.

https://en.wikipedia.org/wiki/Rechargeable_battery

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UC02 Rechargeable Keychain Flashlight – Fenix Flashlights