The Lenovo Micro Memory Card 256GB SD Card offers high speed and high performance for mobile phones and other devices. With a Class 10 speed class and a storage capacity of 256GB, this MicroSD card is suitable for universal compatibility and quick data transfer. The included adapter ensures convenience for use with different devices, making it a versatile and reliable memory storage solution from the trusted brand Lenovo. if you are buying for specialised use please double check your exact specification requirements. If my cards don't perform as advertised I will of course accept returns.