Features: Browse Internet with high speed. File Transmission. Voice calling. Receive/Send E-mail. Receive and Send Short Message (SMS). Specifications: Frequency band: 800MHz Wireless Network: CDMA 2000 1X Operating System: Windows 2000, XP, Vista Interface: USB 2.0 compliant and 1.1 compatible Power Supply: USB powered (4.5V ~ 5.5V) Speed Rate: 153.6Kbps (maximum) Weight: 42g (Approx) Dimension: 74mm x 48mm x 16mm Color: Silvery white/black