- On-board USB interface and CF card holder, support U disk, USB mobile harddisk, and connecting computer.
- When OTG15E connects with U disk and CF card at the same time, user can copy the files of U disk to CF card and also can copy the files of CF card to U disk.
- Support FAT12, FAT16, and FAT32 universal file formats of DOS or WINDOWS operating systems, completely compatible with computer.
- Support the multimedia files of MP3, WMA all levels and all code flow rate. The highest code stream is 1.44Mbps.
- Built-in real time clock, with temperature detection.
- Built-in T9 strokes and Pinyin input methods, and user mainframe can use simple commands to modify the recorded filename easily.
- Built-in output eliminating noise control circuit, switching is more quiet, sound effect is more excellent, and it is more suitable for the advanced professional application.
- Use standard I 2 C communication interface, it is okay for users to connect other I 2 C chips in parallel without adding hardware interface extra.
- With LED display used to indicate playing states.
- Adopt single +5V power supply; inside generate +/-5V used to supply power for operational amplifier, which can get more wide dynamic range.
- Power supply, audio input and output, and communication interface are the same with DR53E's, OTG 15E can replace DR53E as updated product.