Dog Training Collar, TENTEN 4 in 1 Remote Control Pet Training E-collar with Sound Warning, Electric Shock and Vibration Multi-function (Battery Included) Strong Static Impulse: It can penetrate the hair of the pet or fabric within 6mm thick and can quickly and effectively curb the improper deeds of the pet.(NOTE: It is unnecessary to let the discharging point touch the skin of the pet) Automatical Stop: Both the static impulse and warning functions are set with automatic stop, so it is safe for the pet. Power Saving: With automatic on/off switch on transmitter, it can automatic standby and memory function. (NOTE: It is not water resistant) Four Modes: static shock/ vibration/ beep/ light. Sleek and Modern Design: TENTEN dog training collar is compact and easy to operate.