Garmin Unisex Black Beeper Battery Pack

• Providing sound and long-lasting power for your Alpha T 20 or Alpha TT 25 dog collar devices
• The device attaches easily to compatible dog collars and can be controlled from your Alpha 10/200/300 series or PRO 550 Plus handheld device (sold separately)
• Select from five sounds — single beep, double beep, triple beep, low beep and hawk — to indicate various movements, such as running or “on point.” Manually activate the sound with the push of a button to find your dog when in locate mode
• Up to 78 hours of battery life in dynamic tracking mode gives you plenty of juice, so you can focus on your dog instead of the next recharge
• Plus, built-in LED beacon lights can be activated from your compatible handheld to help you visually keep track of your dog in low-light conditions