1. [Perfect accessory] This 16x50 scope is easy to hold with one hand. It can be connected to a tripod and smartphone adapter (5.7 cm to 8 cm, compatible with most smartphones on the market), which is very convenient for long-time viewing. The oscilloscope also comes with a cleaning cloth, cloth bag, hand strap and user manual. 2. [ Monoculars] This high-definition waterproof, anti-fog, dust-proof, shock-proof monoculars, with built-in lens dust cap and O-ring sealed optical components, can prevent lens dust, moisture/debris, and ensure waterproof life function, suitable for most weather and environments. The monoculars have a wide field of view and provide the outdoor viewing experience. You can ly enjoy activities like bird watching, hunting, hiking, camping, sightseeing, etc. 3. [BAK4 Telescope] The 16x50 telescope is equipped with BAK4 prism and broadband multilayer coating lens, which can ensure excellent light transmittance and brightness, and the light transmittance is as high as 99.5%. The monoculars have a low-light function to help you watch things in low light, providing you with an excellent viewing experience. 4. [Professional and powerful monocular] It has a fully multi-layer coated lens coating and a BAK4 prism interior. There is minimal light reflection and distortion. The multi-layer coated optical elements can ensure excellent light transmittance and brightness. The prism system has a perfectly round exit pupil and can provide high-quality images.