Specifically engineered for use in LIMITLESS 4 Drone to maximize performance and achieve the highest 4K Ultra HD Resolution from the Sony Camera on-board LIMITLESS 4. Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds 4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30) Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof Since we here at Drone-Clone Xperts are known for providing nothing but the highest quality products, we made sure to choose a memory card that goes above and beyond its needs.