Precisely adapted to the X4/X3 battery size, accommodates 2 spare batteries + 2 SD cards + 12 microSD cards, to meet the needs of all-weather shooting battery life and data storage, outdoor creations without power. All-around hardcore protection The case is made of high-strength PC material, anti-pressure and anti-drop; the sealing ring design is dustproof and waterproof to cope with rain, snow, sand and dust and other harsh environments. Internal customized EVA sponge layered card slot, buffer vibration impact, avoid battery and memory card scratch damage, data security double protection. Humanized detail design One-button ergonomic latch, one-handed second opening and closing, emergency power replacement in one step; Card partition organizer slot, SD/microSD independent storage, access without confusion; Palm-sized lightweight body, portable and burden-free, easy to put into your pocket or camera bag. Multi-scene application Mountain hiking, cycling followers, travel vlogs, commercial aerial photography ...... Whether it's extreme sports or daily recordings, the provides reliable power support and data protection for your device. With strict quality control certification and worry-free quality, it helps you focus on capturing every frame of excitement!