[New version of 4 driving modes] The remote control necklace has 4 driving modes of vibration, impact, light and tone, ranging from 0 to 99 levels of static impact and vibration. [800m remote control and 100% waterproof] When the dog is playing outdoors, you can control the dog within 800m to collide with the necklace. IPX67 100% waterproof receiver necklace. [Rechargeable fast charging] Built in lithium battery. Our dog training necklace provides 2-3 hours of use and 6-12 days of backup. The transmitter and receiver can be charged at the same time. [Easy to operate] This electronic dog necklace has a separate button, which can be used for sound, vibration, impact, light and up and down movement, allowing you to directly choose the training mode that suits you. You can switch quickly without confusing complexity. [Adjustable collar provides the best fit] The shockproof collar is made of high-quality material, which is soft and fits your dog. This long slim necklace fits the neck up to