Educator FE-562 FOB two dog system with 300 yard range, our smallest handheld remote and receiver, unique key fob design transmitter features an LCD display with backlight for precise control, for small to medium sized dogs 10 pounds and up with neck size 5 to 22-1/2 inches Includes 2 Biothane dog collars (3/4" wide x 30" long), 2 RX-090 mini receivers (2" long x 1.5" wide x 1" high, 2.4 oz.) and 1 FOB style remote transmitter (3.25" long x 1.5" wide x .75" high) well-suited for small hands or in situations where discretion is important Programable S buttons can be set to deliver a tapping stimulation, rising stimulation, tone, or vibration high or low A Pavlovian tone feature provides an effective addition to the stimulation User-selected stimulation levels range from 1 to 100 with additional boost stimulus selectable from 1 to 60