【Ultrasonic Technology】Utilizes advanced ultrasonic sound waves to effectively deter and train dogs, audible only to canines and not humans. 【Multiple Training Modes】Features sound training mode and ultrasonic repulsion mode with three switchable ultrasonic wave patterns for varied effectiveness. 【Enhanced Power Version】Equipped with a powerful 300mAh rechargeable battery for extended use, lasting up to 4.5 hours on a single charge. 【Effective Range】Operates effectively within a 5-meter radius, providing ample coverage for dog training and deterrence. 【Portable Design】Compact and lightweight ABS construction ensures easy carrying and convenient use in various environments. 【Low Battery Indicator】Features a low battery indicator light to ensure timely recharging and continuous operation. Specifications: Model: P03 Battery Capacity: 300mAh Working Voltage: 3.7V Working Current: 1A Charging Voltage: 5V Charging Time: 1.5 hours Working Time: 4.5 hours Effective Range: 5 meters Material: ABS