TI-89 Titanium Calculator

PRODUCT FEATURES • Large LCD screen is easy-to-read. • Program editor lets you write custom applications. • Flash technology enables future software updates. PRODUCT DETAILS • 7.5''H x 3.3''W x 0.9''D • Uses four ''AAA'' batteries (included) • Uses 1 lithium backup battery (included) • Model no. TI89TITANIUM