Kelty Flashback Lantern Maximum Lumen output : 80 (Spotlight), 40 (Lantern) / Minimum Lumen output : 50 (Spotlight), 20 (Lantern) Burn time (High ): 20 hours (Low ): 38 hours Weight: 10oz. / 283gm (does not include batteries) Batteries: 4 AA, not included 5-step Switch: High / Medium / Low / Strobe / Off