Most optics are priced in relation to their features and how reliable they are advertised to be with different calibres and usage. A good compact economically priced optic would be around £150~ where as a high quality brand such as Aimpoint would price their variation at just over £500. The Firefield Impulse 1x22 Compact Red Dot Sight is priced at just under £80 with features that are similar to but do not supersede other more expensive brands.
The Olight Warrior X has a metal housing that weighs 218 grams and is 142 mm long with a diameter of 25.4 mm (head unit is 41 mm). With the assistance of liberally placed o-rings, the housing is waterproof rated to IPX8 and is dust proof, shatter proof and shock proof. The flashlight uses a tail switch for operation and uses a CREE XHP35 NW bulb which casts natural white light.
The FLIR Breach PTQ136 has a 320 x 256 60Hz VOx Microbolometer with long wave infrared accurate between 7.5 and 13.5 micrometres of the electromagnetic spectrum. The lens is 9.1 mm with an aperture of f/1.04, giving a 24 x 19 degree angle of view. This is a narrow field of view however it allows for more precise and detailed visuals at range. This device is designed to give a focused visual thermal than a more overall picture for manoeuvring. As mentioned before, the display comes with multiple visual schemes: White Hot, Black Hot, Rainbow HC, Ironbow, Sepia, Arctic, and Outdoor Alert.
There are many digital optics in the world of technology which assist and develop the ability for a human to enhance what they see. Since the beginning of the First World War, the need to be able to see in hard situations was tackled by the military industry (particularly the Germans).