The LINK-S-DARK uses the interated solar panel and lithium battery technology available only from SPYPOINT to keep your camera running for months. The Hybrid Illumination Technology (HIT) flash system lets you choose the flash system that’s best for you. The integrated lithium battery and solar panel bring extended battery life within reach, saving hundreds of dollars in batteries and travel over the life of the product. Invisible LED technology reduces impact on game, resulting in more huntable animals. In addition to the no-glow setting, there are three other flash settings allowing customization of the flash function to the specific use of the camera.