• Designed for high-drive, more stubborn dogs by offering a higher static stimulation range than the sd-425x
• 500-Yard range e-collar that can support training 3 dogs with the same remote with purchase of additional collars (SDR-AS)
• Choose to train with vibration (Buzz), Tone (beep), or 21 levels of static simulation in either momentary (nick) or continuous.
• Waterproof and submersible to 25 feet using dryer technology
• Lithium Ion, rechargeable batteries feature a 2-hour quick charge, and a low battery indicator lets you know when to charge.Remote Transmitter with antenna - 5.30 inch L X 1.70 inch W X 1.00 inch D
• Fits dogs 8 pounds or larger with neck sizes 5" - 22"

Used. Item appears to be in used condition. Collar has scuffs and is dirty. Item does not have extra attachments. See images for item condition. Everything included with this item can be seen in the images.