The Sprint Blackjack smartphone with Windows 5.0 measures less than 0.5" inches thick and is lighter than most flip phones - this phone is a delight to hold, and will vanish into your pocket, despite being packed with top notch features. The Blackjack boasts an outstanding email experience and full QWERTY keyboard that will keep you productive when outside the office. Plus, with advanced media features and speedy Internet surfing, the Sprint Blackjack makes the downtimes that much more entertain