Technology description: The set of headphones for demonstration includes a MP3 sound generator, a card containing the object codes and earphones.An 8 GB memory card inside the sound generator emits a voice demonstrating object content in English and Vietnamese, music and other sounds such as the birdsong, the murmur of water, theocean sound etc. Along with the two languages integrated into the equipment, the headphone plays a role as a “digital tour guide”. Just entering the object codes into the MP3sound generator, the headphones will provide the visitors with demonstrationon the origin and value of the objects displayed in the museum.

NASATI (According to vnexpress.net, November  10, 2015)