300 Meter Range: Works at a distance of 300 meters. The range varies depending on the terrain, weather, vegetation, and the transmission of other radio devices. Waterproof: This product is waterproof and can therefore be used in the rain. However, it is not suitable for swimming as not all parts are waterproof. Baby Functions: 1. Four main functions: sound signal, vibration, electric shock, light signal. 2. Signal mode: vibration, sound signal, and light. 3. Remote control with LED flashlight. The classic remote control design with a digital display has become more compact. 4. The remote control range is 300 meters (in open areas and without radio interference), but the distance may be reduced by walls. 5. Vibration and electrostatic pulse stimulation, each mode has 100 speeds for adjusting the intensity. 6. The digital LCD display makes it easy to use.