Goal Zero's Lighthouse Micro Charge USB Rechargeable Lantern is an all-in-one solution for an on-the-go person, charging up from any USB port and pairing perfectly with Goal Zero Nomad Solar Panels. Built-in 120 lumen flashlight and easy-to-read battery indicator Weighs only 3.07 oz with runtime of 7-170 hours depending on brightness settingTwo Ways to Charge_ Recharge from the sun by connecting a compatible solar panel in about 3.5 hours _ Recharge from a USB Source in about 3.5 hours __Charge Times_USB Source: 3.5 Hours _ Nomad 7 Solar Panel: 3.5 Hours _ Nomad 7 Plus Solar Panel: 3.5 Hours __Ports:_USB port (input): 5V, up to 1A (5W max) _ USB port (output): 5V, up to 1A (5W max) __Weight: 3.07 oz (87g) _Dimensions: 4.4 x 1.5 in (112 x 37.75mm) __Light:_Full Bright, 4 Lights (Average): 135 Lumens, 3800K _ Dimmest, 2 Lights (Average): 7 Lumens, 3800K _ Flashlight, Bright (Average): 115 Lumens, 3000K _ Flashlight, Dim (Average): 15 Lumens, 3000K _ Full Bright, 4 Lights (Full Battery): 150 Lumens, 3800K _ Dimmest, 2 Lights (Full Battery): 10 Lumens, 3800K _ Flashlight, Bright (Full Battery): 120 Lumens, 3000K _ Flashlight, Dim (Full Battery): 20 Lumens, 3000K