128 GB Micro SD Card

A 128GB microSD card holds approximately 16,000 to 42,000 JPEG photos depending on file size (3 to 8 MB each), or around 3,600 to 5,100 RAW files from a 24MP camera. For video: approximately 16 to 20 hours of 1080p Full HD, or about 2.8 hours of 4K at 100 Mbps high-bitrate. At standard streaming-quality 4K (around 8 Mbps) it holds considerably more. For a dashcam recording continuously at 1080p, it provides roughly 20 hours before the loop-recording function begins overwriting older clips.

Yes. The KingSpec Mixage MicroSDXC UHS-I V30 is compatible with DJI drones that use a microSD slot, including the Mini 3, Mini 4, Air 3, Mavic 3, and Avata 2 series. It meets the V30/U3 minimum DJI requires for 4K recording. With 175 MB/s read and 110 MB/s write speeds, it handles standard 4K drone footage without dropped frames. For DJI Cine editions or drones recording above 200 Mbps, verify whether your specific model requires a V60 UHS-II card for those bitrates.

UHS-I cards have a single row of contacts and deliver up to 104 MB/s interface speed. UHS-II cards have two rows of contacts (you can see them on the card back) and deliver up to 312 MB/s. A UHS-II card in a UHS-I camera runs at UHS-I speeds only. The V60 and V90 cards in this collection are UHS-II and deliver their full rated write class only when used in a UHS-II camera or reader. In a UHS-I camera, the V30 cards at a lower price point deliver identical in-camera recording performance.

Yes, with an adapter. The MicroSD TF Card includes a microSD-to-SD adapter for use in full-size SD slots on cameras and laptops. The reverse is not possible: a full-size SD card cannot fit a microSD-only slot. CFast cards require a dedicated CFast 2.0 slot and are incompatible with both SD and microSD devices under any circumstances.

For most home security cameras and dashcams using loop recording, 128GB provides a large enough buffer for continuous operation. A 1080p security camera generating around 6 GB per hour will cycle through 128GB in roughly 20 hours of continuous footage before overwriting older files. Motion-activated cameras extend this significantly. For 24/7 outdoor cameras or dashcams on long daily commutes, 256GB or 512GB gives a longer retention window and reduces write stress on the card by spreading cycles over more storage.

V30 means the card guarantees a minimum sustained write speed of 30 MB/s during continuous recording. It is the baseline required for smooth 4K video at standard bitrates and is equivalent to the U3 rating. Any card without V30 or U3 may drop frames during 4K recording even if it technically supports the resolution. For Full HD video and everyday photography, Class 10 cards are sufficient. For 4K video on any device (drone, action cam, camera, phone), V30 is the minimum to look for. The MicroSD TF Card and SD V30 card in this collection both carry this rating.

iPhones do not have a microSD card slot. The KingSpec MicroSD TF Card works with Android phones, tablets, drones, action cameras, dashcams, Nintendo Switch, and any device with a standard microSD/TF slot. iPhone users who need expanded portable storage can use KingSpec's external SSD lineup, which connects via USB-C on iPhone 15 and 16 Pro models for direct access and ProRes video recording.