3W 5V Solar Charging Board USB Polysilicon Battery Solar Camera Outdoor Security Monitoring Solar Panel Phone Charger [Micro-port Camera Compatible]: This solar panel is compatible with 5V rechargeable battery powered security cameras with micro-usb interface. But pay attention to the waterproof protection on the interface. [Hyper-Efficient Polycrystalline Solar Panel]: This solar panel charger is an efficient polycrystalline solar panel with an output power of 3.5W and a maximum efficiency value that increases to 18.8%[Continuous Power Supply] the solar panel is perfect for outdoor wireless camera to get uninterrupted and stable power from the sun. No need to waste time on frequent charging of the security camera, more convient. Specification:Working Voltage: 5V Working Current: 0-600maOutput Port: micro-usb (Mini USB) for android USB Cable Length: 3 meters (depends on the actual product) Wafer: Grade A polysilicon Transfer Rate: 18.8% Process: EVA Lamination Color: Black Material: Polysilicon Size: 160x120MM Package Content: 1 x Solar Panel Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.