Note: Avoid leaving the collar on the dog for more than 8 hours per day. Check the fit of the collar to prevent excessive pressure. Please recharge the battery when the first time use it. If you find your trainer only “beep” not “shock” and “vibrate”, please check whether the number display on LCD is 000, you can adjust the number with your requirement. Specifications: Name: Anti Bark Collar Color: Black Material: Plactic Waterproof: IP67 Range: 800M Collar Size: Total 28 inches length (about 71 cm) Rechargeable: lithium battery Remote/Receiver Battery: 300mAh/3.7V Charging Voltage: 5.0V Charging Time: 2 hours Charging Port: Magnetic point Frequence: 433MHz Collar Size: Can fit small, medium and large dogs Stimulation level: 0-99 level vibration and static shock Package size: 11*15.2*4.5cm/11cm = 4.33* 5.98*1.77 inches Package weight: 220g Packing list: 1 x Transmitter 1 x Receiver 1 x Charging Cable 1 x Test Bulb 1 x Collar 1 x User Manual 4 x Contact Points