【2 Toggle Channels and 3 Training Modes】: This dog training collar has 3 separate training modes, such as beep, vibration (level 0-5) and shock (level 0-5), allowing you to adjust quickly stimulus level. It also has a 1-to-2 channel design and setting memory function, you can train 2 dogs at the same time without problems. 【Fixed Conductive Protective Silicone Cover】: It is very safe to use our dog shock collar receiver because it comes with a high-quality non-removable silicone cover that won’t hurt your dog’s skin while training. 【LONGER DISTANCE AND LONGER BATTERY LIFE】: Up to 1640 ft (550 yd) in obstacle-free area and 1000 ft (330 yd) in obstacle-free area. It has a rechargeable remote and takes 2-3 hours to fully charge. Receiver battery standby time up to 15 days (remote control up to 90 days) and working time 7-10 days (remote control up to 25 days) 【IPX7 Waterproof Receiver and Adjustable Collar】: It has an adjustable waist belt that can be adjusted from 8 to 25 inches, the