Recommended Read: What is Nexus One

Nexus is phone by Google and Google says now Web meets phone

Google Nexus One Unlocked PhoneProfessional Kingston MicroSDHC 16GB (16 Gigabyte) Card for Google Nexus One with custom formatting and Standard SD Adapter. (SDHC Class 2 Certified)Skinomi TechSkin - Invisible Screen Protector Shield for Nexus One - Plus LIFETIME REPLACEMENTSBlazing 16GB MicroSDHC Memory Card with MiniSD & StandardSD Adapters for the Google NEXUS ONE Phone
Official Gmail Blog: Gmail on Nexus One