Know when your dog is pointing birds, even when you can't see it.
The sportDOGTM DSL-400 beeper locator is the smallest and lightest beeper on the market. It features:
Volume control 4 selectable beeper sounds: Standard Beep, Hawk Scream, Bob White recall, and Trill Audible out to 400 yards 3 selectable modes: Silent run-beep every second on point Beep every 5 seconds on run-beep every second on point Beep every 10 seconds on run-beep every second on point Low battery detect Waterproof and rugged Backed by a lifetime warranty
Deluxe Beeper Locator (DSL-400) 
Know when your dog is pointing birds, even when you can't see it. 