Sharp Brain Color Electronic Dictionary for High School White Students, PW-HC6,

Touch panel size (68.0mm high x 121.1mm wide) 5.5-inch high-definition WVGA color TFT LCD (854 x 480 dots) Keyboard input (Roman alphabet/Kanji conversion)/Handwriting input (Japanese/English/Chinese)/Soft keyboard input (50 sounds/Roman alphabet kana) Usage time Continuous display: Approximately 70 hours (No card inserted, operating temperature 25°C, continuous display. When the display brightness is set to 3 and the display dims 30 seconds after it is turned on.) Continuous use: Approximately 40 hours (No card inserted, operating temperature 25°C, entering "dictionary" into an English-Japanese dictionary using one keystroke per second to display the English-Japanese translation screen. This is repeated for 5 minutes, followed by 55 minutes of continuous display. When the display brightness is set to 3 and the display dims 30 seconds after it is turned on.)