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https://www.walmart.com/ip/OxyLED…about-item
– Li-on battery with built-in protection from overcharge.
– Uses Cree LED with a lifespan of over 50000 hours
– 2 battery options: use one 18650 rechargeable Li-ion battery or use 3 AAA batteries
– Charger: 110-240V input
– Material: Aluminum alloy
– Color: black