There are four modes to choose from: 1. Flashing Light Mode: Receiver light flashes to remind pets; 2. Sound mode: a beep sound is emitted to remind pets that it is recommended to use ; 3. Vibration mode: the receiver vibrates to remind pets, the vibration size can be adjusted, it is recommended to use; 4. Electric Shock Mode: Shocking animals with static electricity is a serious warning, it will not hurt animals but it is not recommended. This link is one to one i.e. one remote control one pet 1.4 in 1 Remote Control Dog Trainer 2. LCD display four modes: electric shock vibration sound LED lighting 3. Both remote and receiver are rechargeable 4. Waterproof receiver, can be worn when pets are swimming 5. 1000 meters remote control distance Precautions: The range of 1000 meters is an unobstructed straight line distance between the transmitter and the receiver. Product remote control distances vary depending on terrain, weather conditions, vegetation, battery performance and
