1, LED solar energy charging lights can be turned on/off by pressing switch button. 2, The luminance of 10 highly bright LED is 13,000-15,000 (MCD).4, You can also match the computer USB(DC5V) or car charger (DC 12V) for charging,no more than 4 hours .5, nickel chrome rechargeable batteries, 3.6 V (800mA). Suggestion: before use or when not in use for a long time, you must charge regularly in order to achieve the best effect when in use3, Put solar panels 5V (60mA) in the strong sun after turned off,charging for 10 hours, you can use more than 4 hours.