【High-Function Dictionary】 The SHARP PW-9900 is equipped with a wealth of dictionary data, making it ideal for language learning and researching specialized terms. 【Compact Design】 With its slim design, it's convenient to carry and can be used anytime, anywhere. 【Energy-Saving Design】 With a power consumption of only 0.14W, it's very low and allows for long hours of use. 【Size】 Approximately 139mm wide x 106.8mm deep x 14.8mm thick Almost the size of a postcard - Brand: SHARP - Model Number: PW-9900 - Type: Electronic Dictionary - Exterior Color: Silver - Power Supply: DC 3V, uses two AAA batteries. - Country of Manufacture: China - Power Consumption: 0.14W It's old, but it works without any problems.