Feature:1. This is a polycrystalline silicon wafer solar panel charger, energy saving and environmental protection2. The rechargeable battery is surrounded and protected by a frame, making it safer to charge3. Solar panel charger is small and easy to carry, suitable for outdoor use, very practical4. Solar charging board can 2 x 1.2V AA rechargeable batteries, convenient and fast5. Working voltage for DC4V, working current is 0‑250MA, rated power for 1W, more energy savingSpecification:Item Type: Solar Panel ChargerMaterial: Polysilicon waferFunction: 2 x 1.2V AA rechargeable batteries (not include)Solar Panel Size: Approx. 90 x 90mm / 3.5 x 3.5inWorking Voltage: DC4VWorking Current: 0-250MARated Power: 1W Package List:1 x Solar Panel ChargerNote:1. 2 AA batteries are connected in series, and 2 AA batteries must be charged together. Single charging cannot be done.2. This product does not include batteries.