hand crank dynamo led camping light with mobile charger,great for house,camping,travel emergency use Item Name:Dynamo Camping Lantern Description :4pcs ... , emergencies, camping, hunting, fishingand more.Parameters: ABS body, transparent strong PC lamp shield .LED: 3-4V .Built-in rechargeable battery 3.6V/ ... within 24-48 hours. hand winding dynamo led camping lamp with hook/dynamo camping lantern