【3 Modes + 8 Sensitivity Levels】 An anti-bark collar that can be adjusted to suit your dog's barking habits. You can adjust the sensitivity and modes (beep, vibration, and static shock) to match your dog's size and personality. This anti-bark collar guarantees safe training for your dog and is harmless to them. 【AI Chip for Accurate Low-Frequency Detection】 Detects barking at specific frequencies and decibels, preventing false triggers from other sounds or other dogs' voices. It's the perfect anti-bark collar. You can use it with peace of mind, without stressing your pet. 【Long-Lasting Battery】 Fully charges in just 2 hours. Can be used for up to 20 days on a single charge. 【IP67 Waterproof】 IP67 waterproof specification, can be used without problems on rainy days or outdoors. 【Ultra-Lightweight】 Lightweight design that doesn't put a burden on your dog's neck. Also excellent as a training collar. Not new, but Unused. The contents have been opened. I'm selling it because I no longer have the opportunity to use it, as my dog stopped barking unexpectedly.