800m range - The remote training necklace uses RF434MHz frequency to provide a range of up to 800m and easily put your dog in the park or yard. Waterproof receiver - It works even when immersed in water, allowing your dog to swim or swim freely. Rechargeable remote control and receiver can be charged at the same time to make your device Ready to use. The dog training necklace has 0 to 99 levels of settings for shock, vibration, light and sound stimulation. Suitable for all dogs. Durable adjustable TPU necklace (16-62cm), suitable for small and medium-sized dogs. Necklace remote control, receiver and lithium-ion battery have high range In addition, the automatic power saving mode can maintain the battery life when not in use characteristic: Four functions: sound alarm, vibration and electric shock. Signal mode: vibration, buzzer and light. Remote control and LED flashlight. Classical digital remote control display design makes the receiver more compact Packing list: 1 * Transmitter A