8GB Class 10 MicroSDHC Team High Speed 20MB/Sec Memory Card. Blazing Fast Card For LG GT550 Encore GU292 GW370 Rumour Plus. A free High Speed USB Adapter is included. Comes with Lifetime Warranty. 8GB MicroSDHC Class 10 compliant Built-in Error Correcting Code (ECC) to detect and correct transfer errors Supports Content Protection for Recordable Media (CPRM) Supports auto-standby, power-off and sleep modes Complies with Secure Digital Music Initiative (SDMI) portable device requirements