Esky Dog Training Collar Rainproof Rechargeable LCD Shock Collar, 100 Level Vibration Static Shock Rechargeable: Esky Rechargeable Dog Training Collar with LED backlight. Both collar and remote are rechargeable. No extra batteries is needed. Multichoice for dog training: This dog shock collar provides a professional 100 level shock and 100 level vibration. Power Saving, The collar and remote will be into standy mode if no operation in certain time. Expandable: The remote dog training system can be expanded with 2 receivers; Adjustable belt from length 14 inch to 22 inch. Fits dogs from weigh 25lbs--60lbs. Convenience: Easy-to-read LCD screen shows the stimulation level. This electronic collar has over 3,000 different identity codes to prevent conflicts with other e-collars. Patent product: All Esky branded dog collars are patented product(have the patent number on both the remote and collar)Quality is much better than that of knock-offs.