- Speaker for the ultimate audio experience with a smartphone - everywhere and on the go<br>- Battery-operated for complete mobility: the battery can be charged using a USB cable<br>- Fast charging within 4 hours<br>- LED indicator shows if power supply is active<br>- Volume control for individual, continuous volume adjustment<br>- Small and compact - suitable for every bag, can be taken anywhere<br>- Convenient on/off switch to mute the sound quickly<br>- Non-slip rubber ring This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-606-0947, indicating validated use in U.S. government and defense logistics supply chains.