Braille Display Versions has a built-in buttery and supports a USB memory card, so that you can take Seika out!. You can also connect it to your computer with a USB cable or with bluetooth. It only weighs 640 gram and is very compact. As it supports USB memory, you can read saved data, and using Seika's keys to handle fast- forward, rewind or cue. So you can take your favourite book as Braille data and read it wherever you like. Built-in battery The battery is 800 Mah, the charge time 2-3 hours and the working time is more than 4 hours when Seika5 in Bluetooth mode or USB disk reading mode. With wireless bluetooth, you can connect with your computer a lot more easily. External interface There are two USB ports which enable SEIKA 5 to be connected to a computer as well as other external interfaces simultaneously. You could plug in a USB flash disk and read the file in it. Display system Display capacity Character code original code Power supply bus power / AC adapter / Battery Leather carry case, neck strap NIPPON TELESOFT Co.,Ltd. E-mail: [email protected]