Specifications: ItemInflatable solar lantern MaterialWaterproof pvc Weight4 Diameter5” Height collapsed1” Height inflated4” Open panel dimension3.15”x3.15” Solar panel5v / 120mah Rated watts0.6w Built-in lithium battery3.7v / 1000mah Full charge time8 hours Light lasting of full charge6~12 hours Optimal storage temperature-20°c ~ 28°c Not to exceed 60 °c Full functional temperature-20°c ~ 50 °c