4 Humane Training & Safety Modes: Features 4 effective modes: Beep, Vibration (0-99 levels), Safe Shock (0-99 levels), and a built-in LED Light. The LED mode is specifically designed to help you locate your dog instantly in the dark, ensuring safety during evening walks or night camping. Smart Sleep & Safety Wake-up Logic: To maximize battery life and prevent accidental corrections, the remote enters auto-sleep when idle. A "Two-Step" safety trigger is required: press any button to wake up the screen first, then press a functional button to send a command. This intelligent design ensures you never trigger the collar by mistake in your pocket. Instant Response & Power Efficiency: Despite the power-saving sleep mode, the system features Zero-Lag technology. Once woken up, the remote communicates instantly with the receiver. The high-capacity rechargeable battery provides weeks of standby time, making it the perfect companion for long outdoor training sessions. IPX7 Waterproof for Aquatic Adventures: The receiver is fully sealed with an IP67 waterproof rating, allowing your dog to swim, play in the rain, or splash in puddles without worry. It’s a truly "all-weather" tool for active dogs (Note: Remote is splash-proof only). Extended Control Range for All Breeds: With a stable signal reaching up to 3300ft, you can maintain control in parks or open fields. The adjustable collar strap (8-26 inches) comfortably fits small, medium, and large dogs from 15 to 100 lbs. Train Like a Pro with the Heaflex Smart Dog Training System The Heaflex Dog Training Collar is more than just a training tool; it’s a communication bridge between you and your furry friend. Engineered with the latest Smart-Sleep technology and a Night-Locate LED, this professional-grade collar ensures effective training while prioritizing your dog's safety and comfort. Why the Heaflex System Stands Out: The Power of 4 Modes: Most collars only offer three. We’ve added a high-visibility LED Light mode to help you locate your dog instantly after sunset. Combined with Beep, Vibration, and Safe Shock (0-99 levels), you have a complete toolkit for every dog's temperament. Safety-First "Wake-then-Command" Logic: We’ve eliminated accidental shocks without the need for a bulky physical switch. The remote enters a smart sleep mode when idle to save power. A simple press of any button wakes it up, and your next press delivers the command instantly—preventing misoperation while the remote is in your pocket or bag. Built for the Professional & Outdoor Use: With an ultra-long range of up to 3300ft, this system is perfect for open-field training. The IP67 waterproof receiver is built to endure rainy day hikes or trips to the beach. Customized Sensitivity: With 1-99 adjustable levels, you can find the precise "tickle" that works for your dog’s specific sensitivity, ensuring a humane and effective training experience for medium and large breeds. Package Includes: 1x Remote Transmitter, 1x Receiver Collar, 1x USB Charging Cable, 1x Test Light, and Easy-to-Follow Manual.