A solar cell charged and USB rechargeable (the charger included in the package). Power: 0.2-1.2W. Color temperature: 2800k - 3200k. USB port: 5V 0.6A. USB feed: Type-C. Battery: Built -in lithium ion (1800 mAh). Charging time: Power supply: about 4 hours, sunlight for about 11 hours. Fell light: about 25 hours. Bright light: about 7 hours. Brightest light: about 4 hours.