✅ Multiple units are available, please feel free to ask. 【Vibration and Sound】The anti-bark collar has three effective and safe anti-bark modes: beep, vibration (levels 1-8), beep + vibration, and automatic protection. This triples the anti-barking effect for dogs, creating a bark-free living environment. If stimulation is given 7 times in a row, this dog barking collar will temporarily enter protection mode and automatically turn off for 1 minute to avoid over-stimulation of the dog. The dog anti-bark collar is the best solution to solve the problem of dog barking. 【Suitable for All Types of Dogs】The anti-bark collar for small dogs weighing 3-55KG is lightweight and compact, so dogs are comfortable and have no burden. The adjustable shoulder strap is made of 600D heavy-duty nylon, which is softer and more durable. Suitable for dogs weighing 3-55KG and with a neck circumference of 0-70cm. This anti-bark collar combines functionality, comfort, and beauty. Let your dog stand out with its stylish appearance! 【Fast Charging and Long Lasting】The anti-bark collar can be fully charged in 2 hours. The ultra-large capacity battery extends the usage time to 20 days. The anti-bark collar for small dogs only needs to be charged 1-2 times a month, making it more convenient and energy-saving. Also, it is waterproof, so you can train your dog anytime, anywhere without restrictions. 【Scientific Training Method】Using the smart dog anti-bark collar, the efficiency of anti-barking is improved by 3.6 times, and it is fully automated without manual control, safe and user-friendly. Dogs are important members of our family, but they sometimes do bad things. We need to educate them, not punish them. In addition, it is recommended to use training incentive policies such as providing meals and toys to achieve better training results. 【Quality Assurance】Waterproof and can be used in the rain. High-quality production. Also comes with a Japanese instruction manual. 1,5/160@1855