1. Material: ABS, PP, PC, silicone 2. Remote control/transmitter battery capacity: 300mAh 3. Charging port: USB 4. Applicable objects: dogs over 3 months old 5. Remote control range: about 300-600m 6. 1 drag 1 packing list: remote control x1, receiver x1, collar x1, charging cable x1, conductive column x4, test light x1, manual x1 7. 1 to 2 packing list: remote control x1, receiver x2, collar x2, charging cable x1, conductive column x8, test light x1, manual x1 8. 1 drag 3 packing list: remote control x1, receiver x3, collar x3, charging cable x1, conductive column x12, test light x1, manual x1 9. Size: about 13.2 x 4.8 x 2cm for the remote control, about 6.4 x 3.8 x 2.5cm for the receiver, about 75cm for the collar Features: 1. Strong anti-interference ability 2. The remote control distance is long, up to 300-600m, and the signal is stable 3. Cylindrical contact buns are in contact with the skin and do not hurt pets 4. USB charging port, convenient and fast 5. The collar is adjustable and the buckle design is convenient to wear 6. One-key switch remote control mode/automatic mode, warning sound/vibration/static pulse 7. Deep waterproof, easy to operate 8. Use buzzer technology to transmit sound to avoid false triggering