Thank you for viewing! This is an electronic dictionary for high school students, originally priced at 26,800 yen. I purchased it for university entrance exams, but I only used it a few times. It has many functions, including English, Japanese, and mathematics, and I think it's perfectly usable. When shipping, I will include the AC adapter and charging cord as shown in the last photo, so you can use it immediately upon arrival. Here's the product description: 5.5-inch WVGA+ color LCD (854 x 480 dots, 121.1mm wide x 68.0mm high) with touch panel Calculation functions: 12 digits (addition, subtraction, multiplication, division, memory, percentage calculation, etc.) Calculator (with consumption tax setting function), currency conversion, unit conversion, year calculation, age calculation Power supply: Lithium-ion rechargeable battery, AC adapter Usage time: Continuous display: Approximately 140 hours (When the card is not installed, and the display is continuously on at 25°C. Brightness level 3, and the display dims 30 seconds after being on.) Continuous use: Approximately 65 hours (When the card is not installed, and at 25°C, the English-Japanese dictionary is used with 1 key press per second to input "dictionary" and display the English-Japanese translation screen. This is repeated for 5 minutes, followed by 55 minutes of continuous display. Brightness level 3, and the display dims 30 seconds after being on.) External dimensions: Width 152.4 x Depth 94.5 x Height 17.9mm (closed, thinnest part, excluding protrusions) Width 152.4 x Depth 94.5 x Height 18.4mm (closed, including protrusions) Weight: Approximately 265g (including rechargeable battery and touch pen) Internal memory: Approximately 200MB * You can delete the e-book data pre-installed on the device to increase the user area. If you delete the pre-installed e-book data, you will need to initialize the device to restore it. Initializing the device will erase the content downloaded and stored in the device's memory, My Dictionary, word lists, history, handwritten memorization notes, calculator memory, currency conversion settings, and content created with tools. The settings in "Various Settings" and the consumption tax rate in the calculator will return to their initial state. Accessories: Touch pen, AC adapter, microUSB cable Key arrangement: Typewriter key arrangement