Electronic dictionary powered by DC 3V, with a USB port and headphone jack. - Model: XD-SW4800 - USB port: Yes - Headphone jack: Yes - Speaker: Yes - Power supply: DC 3V, uses 2 alkaline batteries Thank you for viewing. Used for about 3 years around 20 years ago and then stored in a dark place. The screen is not color. Handwriting input is possible. A pen is also included and can be stored in the main unit.