[Updated] TCBunny&reg; 1000 Yards Blue Backlight Rechargeable Water-resistant Wireless Remote Dog Training Collar- Shock, Vibration, and Tone Corrections Blue backlight LCD Screen, with vibration, static shock, and beep function. Over 3000 different identity codes to prevent conflicts with other e-collars. Up to 1000 yards range, which allow you and your pet play on a big open area 4 Modes: Vibration, Shock, 2 Sounds. 8 levels for adjustment Water-resistant collar, Long time standby work, 3 Days, 1.5 Hours working time Saving beads switch inside will ring if you shake the receiver. Everytime you reset the receiver, you need to match code again.