Brighten up your flower beds or garden borders with this 4 pack of SuperBright adjustable spot lights which, at 3 lumens, are significantly brighter than regular LED solar lights.Fitted with a ground stake, simply insert it firmly into the ground and adjust the angle and direction of the spot light head to direct the light where required. Each spot light contains 3x integrated white LEDs.Solar lights are designed to charge a rechargeable battery during the day via the solar panel and automatically light up at night; the expected light time is determined by the amount of exposure the solar panel receives during the day and how bright a day it has been.We recommend regular cleaning of the solar panel every couple of months to maintain the optimum conversion of the suns energy into direct current.Typical light times are as follows Spring 2-5 hours, Summer Up to 6 hours, Autumn 2-5 hours, Winter 0-2 hours.These high-quality solar LED lights come with batteries pre-installed and are ready to be used straight from the box. Replacement Smart Solar 1.2V AAA Ni-MH 300mAh batteries can be purchased separately (1 per spotlight).To maintain the optimum performance we recommend regular cleaning of the solar panel on these outdoor lights.