Fully waterproof design: the receiver has a super waterproof performance, so your pet can swim or walk in the rain with it - Adjustable levels: levels of vibration and shock are adjustable from 1 to 99, and you are advised to try levels gradually to find the proper one when using this pet training system for the first time - 3 training modes: shock / vibration / sound - With blue backlight screen: can be used at night - Long-distance remote control: the remote distance is 800m (without any disturbance) - 3 channels: there are 3 signal channels on the remote transmitter, and it can control 3 receivers of the same model - Auto power save: automatic standby mode and memory functions - Adjustable collar size: the max adjustable length is up to 67cm, suitable for all size dogs نوع الحيوان كلاب