Product name: 4-in-1 electronic remote dog training collar BS 1026 Description: 1. This training collar is a combination of: Vibration + static impulse + 3 level whistle + LED light 2. This system allows you to take control of your dog's behavior problem immediately or train your dog in a smart way 3. It's completely safe for both animals and humans Features: 1. Two pairs of metal prongs (short/long) to suit dogs with varies fur length Hand held easy to use remote control works up to 200 meters away 2. The strong static impulse can penetrate the hair of pet and fabric within 6mm thick 3. The static impulse can quickly and effectively curb the improper deeds of the pet 4. The warning vibration will let your pet associate the vibration with static impulse at the end, and vibration will achieve the same effect as the static impulse 5. LED signal light on the remote allows you to seek your dog at night 6. The 3 level whistle helps you to build communication with your dog effectively 7. Adjustable collar length (from 20 to 50cm) fits different size of dogs 8. Water-resistant Product specifications: 1) Collar: Length: 43mm Height: 68mm Width: 38mm Weight 110g (with battery) Collar length: Adjustable from 20 to 50cm Power: 2x 1.5V AAA battery 2) Handsets: Length: 120mm Height: 25mm Width: 45mm Weight: 110g (with battery) Power: 9V battery Package included: Multifunction training collar device Remote control unit Adjustable snap on/off collar with D ring for lead attachment Collar testing unit (clips to collar and lights up to tell you the shock action is operating) Operating instructions: 1.5V AAA battery x 2 9V battery