Description: and high quality Features:Durable, water-resistant and long lifespan.Light and thin, easy to use and carry.High conversion rate, high efficiency output, excellent weak light effect.Overcharge for protection, reverse for protection, DIY your backpack and teaching use.Little noise, high efficacy and low malfunction and suitable for outdoor activities like camping, fishing, hiking, etc.Solar panel only, other accessories demo in the picture is not included.Product parameters:Parameters type: JH-M20W Maximum power (watt): 20WMaximum power voltage: 18VMaximum power current: 1.12AOpen circuit voltag: 20VShort circuit current: 1.5ANumber of cells: 36pcs Specification:Type: Solar PanelMaterial: PETApplications: Car, boat, caravans, camping, fishing, hiking, etc.Features: Solar Panel, Ultra-thin Outdoor Flexible, Emergency Electric, Polycrystalline BoardDimension: app.45x29.5cm/17.71x11.61inColor: BlackQuantity: 1 Set Note:1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1:1 Pc x Solar Panel2:1 Pc x Solar Panel1 Pc x 10A Controller3:1 Pc x Solar Panel1 Pc x 20A Controller4:1 Pc x Solar Panel1 Pc x 30A Controller