This will be appealing to anyone who once owned a Nintendo Entertainment System. The Retro Nintendo Famicom Battery & Card Reader is an ideal device for video game consoles, phones and music players which ideally looks as a controller made for the NES. This battery back consists a 3600mAh battery as well as a card reader/writer. You can easily use to transfer files with the help of the the micro SD card slot. The included strap will help you to attach it easily to a bag. An ideal product made exclusively for all the Nintendo fans out there.