Waterproof, lightweight, durable_ When heading off-grid keep things well lit once the sun goes down, perfect for camping, hiking, climbing, kayaking... virtually anywhere you're heading without access to power.__Off-grid power_ The addition of a two-way USB port lets you fully charge it before you leave and then top up the battery on your smartphone whilst away, and still have a couple of hours light left for when the sun goes down. __4 light modes_ The lowest setting lasts up to 50 hrs, but there's also a bright and even super-bright setting for a more intense light that uses more of the battery. To get attention there's also a 1 second flashing mode. __Charge by day, use by night_ This extremely versatile bright light is completely solar powered, charging up fully in 14 hours of direct sunlight, and able to last for 50 hours on each charge.__Short on space?_ Let out all the air and you're left with a 1½" thick disc, small enough to take up very little pack space with all your other essential gear.____Clear finishDual straps: adjustable bottom strap/fixed top strap4 modes: low, bright, superbright, 1 sec flashingPress and hold power button for 3 seconds to shut off10 warm white LEDs, 150 lumens2000 mAh 5V Lithium-Ion Polymer BatteryLasts up to 50 hoursCharges in 14 hours of direct sunlightFully charges in 2-3 hours via USB4 LED battery level indicatorWaterproof: IP67 ratingIncludes Two-way 1A USB PortIncludes 1m USB to USB cableTop-up charge a smartphone 30-50% in 2-3 hoursOperating temp: 0°C - 45°C (32°F - 113°F)Overcharge and over discharge protectionOvercurrent and short circuit protection_ Dimensions (inflated): 12.7cm D x 10.8cm H_ Dimensions (collapsed): 12.7cm D x 3.8cm H _ Weight: 156g (5.5oz)