1Portable Tool: Compact and portable, easy to carry with your pocket and backpack, and will not cost much your energy to install the mini solar panels. 2DIY Accessories: Able to support a system to run when is installed to efficient solar charging circuit, you can use the 2V solar panels to DIY your special item. 3Applicable Situation: Suitable for outdoor cycling, mountaineering, hiking and other activities, also applicable for low power appliances, emergency lights, advertising lights and other solar systems. 4No Burden: Mini solar panel has a small size of 80x50mm/3.1x2.0in, easy to welding and carry with, will not cause excess burden to affect play and performance. 5Package Content: The package contains only 2 solar panels, other accessories and tools need to be prepared by yourself, please make sure you are clear about this.