Thermal imaging sensor with NETD 40mK ensures perfect detail recognition even in the hardest weather conditions when thermal contrast is low. The fast lenses of the Helion 2 XQ38F and Helion 2 XQ50F thermal imagers combined with a highly sensitive thermal imaging sensor provides exceptional detection capabilities. The Helion 2 XQ models give users the best quality, most detailed & high-contrast, informative imagery every time, even during rain or fog, when the temperature contrast of the observed scene is minimal. Image Detail Boost function significantly increases the sharpness of the visual target. Quick-change rechargeable battery packs provide enough power for up to 8 hours of non-stop operation. The built-in video recorder is a great asset when it comes to filming or taking photos of once-in-a-lifetime experiences. Rain, snow, fog, high waves or waterways, the IPX7 waterproof rating ensures the device won’t fail in even the toughest wet weather conditions.