1: Supports IP67 dust and water resistance, can be immersed in 0.5 meters of water for 30 minutes without any damage, and can easily cope with complex scenes such as heavy rain, waves, sand and dust, providing all-weather protection for the equipment; (-grade protection, no fear of extreme environments) 2: Compatible with standard for mounts, with quick-release cables, can be quickly replaced with other models without tools, adapt to multiple device scenarios, save repeated purchase costs, save money and worry! (Quick release compatible, one shell for multiple uses) 3: The large-area heat dissipation fin design combined with the excellent thermal conductivity of aluminum alloy can quickly dissipate heat without active heat dissipation, avoiding overheating protection or lens fogging during high power consumption operation, ensuring clear and smooth for a long time; (efficient heat dissipation, stable operation) 4: Designed specifically for DJ Action4/5 filters, it provides lens scratch protection while supporting the expansion of accessories such as ND filters and polarizing filters to meet professional needs in strong light, underwater and other scenes; (professional filter support, more freedom) 5: Equipped with three sets of M2 threaded holes and 1/4 standard threaded holes, it supports the installation of accessories such as gimbals, fill lights, microphones, etc., unlocking multiple scenes such as aerial photography, diving, and car-mounted, meeting the flexible needs of professional creation and outdoor adventures; (multiple interface expansion, upgraded gameplay) (The product printed words depending on the batch, but this does not affect use) Color: Black Material: Aluminum Alloy Package Contents: 1 * Protective Case Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.