I have purchased lights from several manufacturers over the past 18 months. Baxia lights have performed flawlessly over summer heat and winter cold. Eventually the batteries will have to be changed, Luckily, buyers can purchase new rechargeable batteries and enjoy hassle free lights that charge from the sun and perform well. The lights are bright for the size. They turn on when a small animal , or larger comes within 10 feet. They lights turn off 15 seconds after motion has stopped.