Viatek XXL Hybrid 12 LED Lantern Twelve super bright LED's in the Viatek Dynamo Hybrid XXL lantern provide ample light hours after the sun sets. Each lamp requires 3 "AAA" batteries for the battery power operation (not included). Battery power will last up to 10 days with continuous use. Long after the batteries die the Viatek lantern will not. It is equipped with an internal battery and dynamo crank so you will never be without light. . Dual Powered- internal battery. . Twelve super bright LED's in the Viatek Dynamo Hybrid XXL lantern provide ample light hours after the sun sets. . Disposable battery operation.