1.has a socket for a 3.5 mm audio jack
With a standard mini jack socket, you can use the device with most headphones.
A remote control allows you to control the device remotely. The remote control can be included or optional.
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
More audio input ports mean that more audio devices such as microphones and keyboards can be connected at once.
6.has an external memory slot
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.