Nokia 21M-02. Data network: 3.5G, 3G, EDGE, GPRS, GSM, HSPA, UMTS, UMTS bands supported: 900, 2100 MHz, GSM bands supported: 850, 900, 1800, 1900 MHz. Colour of product: White. Width: 86.2 mm, Depth: 28.8 mm, Height: 13.3 mm. Operating temperature range (T-T): -15 - 55 °C. Compatible operating systems: Windows XP (SP 3) Windows Vista (SP 1) Windows 7 Mac OS X 10.5 Leopard Mac OS X 10.6 Snow Leopard