Daktronic™'s state-of-the-art Horn Start System gives swimmers (and timers) a clear start command with corresponding light flash. • Set includes backstroke flagpole mounting bracket, remote strobe and auxiliary speaker. • Easily connected to many brands of timing systems. • Practice-mode setting has start commands every 2-3 seconds while competition-mode setting is manually controlled by operator. • 360 degree strobe light viewable from all angles. • Up to 10 individual lane speakers can be connected at a time. • Separate speaker connections and two sealed volume controls allow for maximum sound customization. • Charging system allows for more than 15 hours of continuous use and a battery lifetime of up to 5 years. • Durable and lightweight. • 14 lb. • 12''H x 8''W x 14''D. • Aluminum construction.