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Discover the ultimate dog trainer with this rechargeable ultrasonic device. Featuring a convenient battery display, this super powerful device helps control barking effectively and humanely. Its anti-bark function uses ultrasonic sounds that are harmless to your pet, yet highly effective. The built-in LED flashlight adds a convenient feature for nighttime walks. Rechargeable via USB, this trainer is perfect for everyday use, whether at home or on the go. Give yourself peace of mind and help your dog develop better behavior with this versatile training tool.