Tracker's Strike Collar is popular for both coon hounds and pointing dogs. The collar features either a tree or motion sensor, and you can increase the power output of the collar by replacing the standard battery with two half height 3.6 volt lithium batteries. Other Strike features include: - Magnetic on/off switch - Waterproof - 500 hours of battery life with one 3.6V lithium AA battery - 144 hours of battery life with two half-height 3.6V liethium AA batteries for increased power output - AKC and AFTCA approved for pointing dog field trials