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Today, most of the loudspeakers are big in size due to their large diaphragm. Hence, they limit their portability. The idea is to replace the conventional diaphragm with a more elastic diaphragm so that it can be compressed or stretched, without altering the sound and vibration quality, thus making it portable. Its circular radius is same as of a compact disc i.e. 60mm, and height is 20mm (when closed).

It has in-built :
1. Bluetooth device
2. Music player
3. MMC card slot
4. Battery
5. Battery status indicator
6. USB charging

Website : http://www.sankalpsinha.com/work/pumpitup.html