AmpliVox S602M MityMeg Plus Megaphone with Piezo Technology Type: PAL (Portable Audio Laboratory) Spec: 25 Watts Range: 1760 Yards Battery Life: Requires 8 C-Cell Batteries (Batteries store in convenient battery pack) for up to 40 hours continuous talk time. Dimensions & Weight: Dimensions: 14 long x 9 bell Diameter Weight: 2.75 lbs