â?�Solar panel: 0.4W 5V integrated â?�Light source: 0.5W 1LED â?�Battery: 550mAh 3.2V LiFePO4 â?�Lighting: 2 brightness settings â?�Foldable stent for easy carry â?�Rechargeable by AC charger: optional (can be charged by Nokia 2mm charger) â?�Lighting angle: adjustable, â?�LED charging indicator â?�Overcharge and overdischarge protection: