1. Material: ABS, nylon webbing
2. Function: collar, dog training device, barking control device
3. Power source: USB power supply/built-in battery power supply
4. Built-in battery: 300mAh lithium battery
5. The product has a built-in lithium battery, which can last for a long time
6. The neck strap size is 25-75 cm, suitable for most dogs
7. With waterproof function, please rest assured to use
8. Please turn off the power if not used for a long time