BD07 mp3 music player comes with a rechargeable technology. It has a USB port, multiple modes, and WMA format music files. It supports memory cards up to 32GB. It is able to run for 2-4 hours. It is quite popular for its ultra-thin design. Its length and width is 6.5 x 2.5 x 0.90 cm. It is very light in weight and can be easily carried.