Dogtra Outdoor Yard Pet Dog Advanced 3 4 Mile Remote Trainer 2-hour rapid charge Lithium Polymer batteries, Fully waterproof collar/receiver and transmitter, LCD screen displays exact level of stimulation even in dark or low light conditions. Warranty - 2-Year Limited Lifetime Warranty, Power - Low to High Range - 3/4 Mile. Limited Lifetime Warranty, Power - Low to High Range - 3/4 Mile Batteries - Lithium Polymer, LCD Screen - Yes, Carrying Case - Yes, Expandable - No, available in 2-dog unit (2302NCP), Pager Mode (Vibration) - Yes. Batteries - Lithium Polymer, LCD Screen - Yes, Carrying Case - Yes. Dimensions: 13"Hx11"Wx5"L. Weight: 4.7lbs.