... .Reverb /Echo function SPECIAL PRICE!!!Mini size waistband teaching tour guide speaker with multifunction V-3 *Mini size,easy ... Play time:8-15hrs(Deending on the volume and temperature)*Net weight:285g(Including battery)*Dimension:106*86*42mm *Amplifier ... Audio cable x 1pc*Hanging belt x 1pc APPLICATIONS:Teaching, Tour guiding, Morning exercise, Training, Sports, Speech,Publication,Outdoor entertainment ...