The Samsung B2100, also know as the solid extreme, the Xplorer and the X-treme edition, is a quad-band GSM device with UMTS support with video calls (thanks to the front-facing secondary camera). The B2100 also has a 1.7-inch TFT display with a resolution of 176 x 220 pixels and a 1.3 megapixel fixed focus camera. The B2100 features a bright flashlight, compass and pedometer. In addition, it is equipped with all the basic functions necessary to modern telephone: bright screen, a choice of decoration, a 1.3 megapixel camera, mobile internet access, hotkeys, FM-radio, audio and video player, 10 MB of memory and support for microSD cards. Designed for durability, the Samsung B2100 features a specially hardened casing to protect against knocks and scraps. Featuring rubber keys designed to resist dirt and dedicated port covers to keep charger and headset connectors safe. A waterproof membrane protects external volume controls.