THIS PRODUCT IS A REFURBISHED ITEM Pulsar's Trail thermal imaging scope is designed for the use both in the night-time and during the day in adverse weather conditions. The heat sink, located on the device's body, effectively prevents heat build-up from the sensor and other components while also significantly reducing temperature and noise sensitivity, especially between calibrations. The highlight of the Helion is the ability to link via Wi-Fi the device with Android and iOS based mobile units using the free mobile application Stream Vision.