ALEKO TS-TC13 Most Classic Remote Training Collar 4 Functions: Instant Static Impulse, Vibration, Whistle Signal, LED Light. Water Resistant Excellent remote control training collar for Small, Medium & Large-sized dogs, very Easy to operate The electronic dog training system with a working range up to 800 feet It is a Perfect training aid for your dog which can help you achieve a well trained and contented dog within days The remote collar is, at present, most humane pet training tool. Use as per proper manner could train pets safely and effectively without any hurt