[Amazing Read and Write speed] Up to quick 80MB/S transfer speeds and 70MB/S shot speeds, the sd cards support 4K Ultra HD resolution video recording and playback. [Made by Vantrue] Vantrue manufactures this memory card with high quality raw materials and technology. Applicable to all dash cam of the Vantrue (Support 256GB Max dash cam ) and most of the other dash cam in the market. [Stable Performance] Waterproof (Grade: IPX5), X-ray proof, Magnet proof. It can work in extreme temperature ranges: -13℉~185℉， and storage temperature ranges: -40℉~185℉. [Wide Range of Applications] This memory card is suitable for many items: dashcams, cameras, mobile phones, tablets, Drone, body cams, security systems, computers etc. Note: Not all devices support SDXC. Check with device manufacturers for more details. [Warranty] 256GB Micro SD card with free SD Adapter, which fits most devices.We promise 2 years limited Warranty and 100% Satisfied Service. Anything you can contact our customer service team, all emails will be replied within 24 hours.