The Pet Life ® Ellipse LED 1-to-3 Dog 16-Level Vibration Sound and Stimulation Training Dog Collar features up to 16 intensity levels of Sound, Vibration and Electronic Stimulation that operates at a long distance range of approximately 550 Yards. The Transmitter device has the ability to toggle between 3 Receiver Collars (additional receivers sold seperately). The transmitter is equipped with an LED Display screen where the user can view the adjustable intensity levels, channels and modes. The Transmitter and Receiver is Waterproof and features a safety keypad lock to protect against accidental usage with an Auto-off Power Saving feature to conserve battery. The Ellipse training dog collar also includes a 4 Contact Points and silicone safety covers for both long and short-hair dogs with a testing probe and a handheld wrist attachment in addition to a Dual Micro-USB charger that connects to both the Receiver and Transmitter that fully charges after a 1 Hour and provides 10-20 days of standby usage. The durable nylon dog collar fits neck-girths ranging from 6.5 - 24 Inches. Features a unique contoured design for easy gripping. Available in Black and White. Specifications - Battery Capacity - Transmitter 450mAh | Receiver 300mAhCharging Port - Micro USBWireless Power - 100mW Charging Time - 1-1.5 HoursStandby Time - 20 Days Transmitter | 10 Days ReceiverBattery Type - Polymer Lithium IonRated Input - 5V/1AOperating Voltage - 3.7VWaterproof Rating - IP67Range - Approx 550 Yards