【Effective Dog Training】This multi-functional device helps stop excessive barking and train dogs using ultrasonic technology, making it an essential tool for pet owners. 【Dual Frequency Modes】Features both fixed and scanning frequency modes, allowing for versatile training options to suit different dog breeds and behaviors. 【Powerful LED Flashlight】Equipped with a bright LED flashlight with steady and strobe modes, providing added functionality for nighttime use or emergencies. 【Long-lasting Battery】800mAh polymer lithium battery offers up to 2 hours of continuous use, ensuring extended training sessions without frequent recharging. 【User-friendly Design】Easy-to-use interface with vibration feedback, battery indicator, and intuitive control buttons for seamless operation. 【Compact and Portable】Made from durable PC/ABS material, this lightweight device is perfect for on-the-go training sessions or walks. Specifications: Battery capacity: 800mAh Battery type: Polymer lithium battery Battery model: 902535 Operating current: 500mA Charging voltage: 5V Continuous operating time: 2 hours Motor speed: 15,000 rpm Lamp bead type: LED Ultrasonic power: 20-30kHz Charging time: 40 minutes Material: PC/ABS Notes: 1. The product utilizes ultrasonic wave technology; the effect may vary depending on the dog type. 2. The product emits strong light. Do not look directly into it to avoid eye injury. 3. The product is not waterproof; do not immerse it in water or expose it to rain.