100% SOLAR POWERED-Built-in 10 bright Leds and 1000 mah rechargeable lithium polymer battery, its completely powered by the sun, just put on the light under the sun, full charge about 8 hours. Its easy to operate. ADJUSTABLE BRIGHTNESS 3 mode brightness for your choose. 1st press for 40 lumen low brightness, 2nd press for 90 lumen high brightness, 3rd press for blink when emergency or atmosphere light. 4th press for turn off. WATERPROOF & RECHARGEABLE High quality PVC enclosure to protect the light from water erosion, which make this solar light suit all weather conditions and prolong life-pan. No additional battery needed, save your money. PORTABLE DESIGN - Inflating nozzle make it easy to inflate and fold after deflated, it can be easily hanged in backpacks or handle by hand. Don't worry about children touching, is safe for children use, it can be use as a night reading light for children. WIDELY APPLICATIONS - It widely use in outdoor activities like camping, hiking, hunting, fishing, patio. Also can be use in emergency situations such as roadside assistance, blackouts, flood and other disaster rescue. Beside above applications, it can be use in Halloween, Christmas and New Year lighting decoration.