Our products are designed with Integrated Circuits for constant current and high efficiency power consumption with built in overcharge and discharge protection protecting the LED and battery pack. We use long-life durable nylon switch control tested to last over 10,000 operations. Supplied with linear type long life with choke transformer for stable and safe charging even during wide voltage fluctuations. Precision design elector plated reflector for maximum light throw and brightness. Each unit is precisely adjusted at production for optimal reflector efficiency. Time tested LED Heat sink designed to lower the temperature of LED for longer life and superior performance. With Solar Power charging facility. Simply plug the solar panel into the power input for smooth charging. *Solar panel not included Powered by solid state sealed anti leak Nickel-Cadmium battery packs with rapid recharge time and a minimum of 1000 charge cycles.