shortA good lantern shouldn't be complicated. The Lighthouse Core rechargeable USB lantern features 430 Lumens, brightness dial, long-lasting battery and USB output.featuresLIGHTHOUSE CORE HIGHLIGHTS USB Rechargeable lantern featuring 430 Lumens.; Features a 1A USB output and enough battery to recharge phones and other small USB devices.; Up to 350 hours of run time on an ultra-low setting or up to 4 hours on a super-bright setting.; TWO WAYS TO CHARGE THE LIGHTHOUSE CORE Recharge the Lighthouse Core from the sun by connecting aNomad 10 solar panel in about 5-10 hours; The Lighthouse Core can be recharged from a USB Source in about 5 hours; techCHARGE TIMES USB: 5 Hours; Nomad 10: 5-10 Hours; GENERAL Product SKU: 32009; Simultaneous Recharge & Discharge: Yes; Chainable: No; Weight: 0.8 lbs (0.36 g); Dimensions: 5 x 4.5 in (12.7 x 11.4 cm); Warranty:2 years; PORTS USB port (output): 5V, up to 1A (5W max), regulated; USB port (input): 5V, up to 1A (5W max); BATTERY DETAILS Cell Type: Li-ion NMC; Cell Capacity: 16.3 Wh (3.7V, 4400mAh); Lifecycles: hundreds of cycles; Shelf Life: Keep plugged in, or charge every 3-6 months; Management System: Charging and low-battery protection built-in; LIGHT LED (output): warm white LED, 430 Lumens; Color Temperature: 3,500 Kelvin; RUN TIME One side lit: 350+ hours (low), 8 hours (high); Both sides lit: 200+ hours (low), 4 hours (high); WHAT'S IN THE BOX Lighthouse Core Lantern;