- Revolutionary macro lens fill light for smartphones: the industry's first macro lens fill light that enhances smartphone photography. This compact, powerful light illuminates shots in dim light, helping you capture fine details such as leaf veins or butterfly wings. It is ideal for outdoor enthusiasts and elevates any macro shot. - 37-52 mm step-up ring included: allows attaching mobile phone lenses, filters and professional lenses with 37 mm and 52 mm threads. The kit uses a 52 mm lens thread; to use the fill light, unscrew the middle 37 mm thread. - Super macro recording function: rotating telescopic zoom ring lets you freely adjust from 10x to 20x magnification. Ultra-close focusing at 1.5 cm without blur, enabling shot with fine details. Magnification range 10x–20x, with 1.5 cm (20x) to 4.5 cm (10x) working distance. - Zoom principle: at 1.5 cm distance the focus adjustment yields 20x magnification; at 4.5 cm distance it yields 10x magnification. - 45 light modes: three color modes (cold, natural, warm) with color temperature from 2700K to 6500K and five brightness levels (10%–100%), providing 45 lighting options. CRI > 95+ ensures accurate color rendition. - 2 modes of use: supports mobile phone recording and naked-eye observation. Attach the eyecup to observe tiny details with the naked eye. For phone use, clip the lens to the phone with the mounting hole facing the main camera, then install the zoom macro lens. Optimal working distance between lens and subject is 1.5–4.5 cm.