Warming tips: A.Please do carefully read the manual before using. Proper fit of the collar is quite important B.Not for use with aggressive dogsC. For use with dogs over 6 months of age and over 8 lbs D. DO NOT use when the dog or the collar is wet E . Avoid leaving the receiver on the dog for more than 12 hours per day How To Pair The Receiver Collar and Remote Transmitter : 1. Long press the power button on the Receiver Collar for 3 seconds to turn on the Receiver Collar 2. Press the power button on Receiver Collar 3 times to enter the pairing mode. You will hear a Warning Tone and the indicator become solid. You will now have 10 seconds to finish the pairing 3. Press the Beep or Shock or Vibration or Light Button on the remote transmitter, and receiver collar will respond correspondingly indicating that pairing process is completed Product Features: Security Lock: protects your dog from accidental shock by misoperation 3 Training Modes: beep,vibration and shock modes with adjustable levels,efficient and safe Long Range: up to 3300Ft remote range, easily train your dog in long distance Adjustable strap for different sizes dogs: You could adjust the strap to fit your dog's neck,wonderful for 9lbs~150lbs size dogs LED Light bulit in receiver: helps to locate your dog at night Skin Friendly: conductive silicone sleeve on contact point is better to avoid skin damage during training Specifications: Mode: beep(1-8 level), vibration (1-16 levels), shock (1-99levels) Waterproof grade: IP67 (training dog collar receiver) Working Time: 15days Battery capacity: 300mah Charging time: 2-3 hours Package: 1x Remote Control 1x Dog Shock Collar Receiver 1x Collar Tie 1x Test Light 1x USB Charging Cable 1x Wrist Strap 2x Metal Contact 2x conductive silicone sleeve