Auto-Bark switch: Long press power button on remote transmitter to switch collar between Auto Bark mode and Manual Remote. Automatic Bark Correction with T740. Auto-protect: When there is no barking detected within 30 seconds, the collar resets to the start of the Auto-Bark sequence.
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Smart dog, bark control collar. Features, ball control, IP 67 waterproof, no false triggers, rechargeable, and has three modes. This is great for larger dogs. Please review all pictures and ask if you have any questions. This is effective and safe for dog control. 
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Your dogs will enjoy bathing, swimming or playing in the rain. The bark collar length can be adjusted as your dog grows. Safe, Effective, Easy Setup: The dog bark collar has 4 working modes; 5 adjustable sensitivity levels.
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To increase your safety when using it, the dog collar also features a smart protection mode with a progressive sequence that automatically pauses for 75 seconds after 7 stimulations and then automatically restarts the co.
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Friendly dog collar, animal-friendly dog collar, simple, practical and easy to wear, for dogs of all sizes. -The levels are freely adjustable and support the setting of vibration mode and electric shock mode between 1 and 99.
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① AI SMART BARK COLLAR. Tired of constant barking ruining your peace?. ② 0.1S LIGHTNING-FAST RESPONSE. Every bark counts—and the KJKZO Bark Collar acts faster. With a near-instant 0.1-second response (before you can even say "Quiet!").
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eBay