Overview：
- Complete wireless system
- Signal field is a circular boundary
- Progressive warning tone
- Variable field width control
- Speed detect Anti-run through
- Multiple collars operation
- Waterproof & Rechargeable Collar Receiver
- A Water-resistant TPU collar fits dog neck sizes 8 to 21 inches(20.32 cm - 1333.5px).

Specification：
Material: plastic
Weight: about 430-720g(base on different set）
Range: 500m Dimension:
Transmitter: 14.8*8.5*80 cm
Receiver: 6.5*3.9*80 cm

Package contents:
1 x Indoor wall-mounted Transmitter
1 x Rechargeable and Waterproof Collar Receiver
1 x 110V Power Adapter USA Plug
1 x Adjustable Strap
1 x English User Manua