Wearable neck cooler that directs cold air across the back of the neck for immediate, long-lasting comfort. Key benefits and why you need it: - Fast targeted cooling. Turbo cold-air system envelops the back of the neck from top and bottom to cool a large area quickly, reaching about 15 C in seconds for rapid relief from heat. - Powerful semiconductor cooling. NTC control with a cold aluminum semiconductor element increases perceived cooling and maintains strong cold output even in high ambient temperatures up to 40 C. - Long, reliable battery life. Built with a 5200 mAh dual-core lithium battery using the same cell type found in new energy sport vehicles, providing about 45 percent higher single-cell capacity and about 30 percent higher energy density for extended runtime and durability. - Comfortable and portable. Lightweight design sits comfortably on the neck for hours, making it practical for everyday wear. - Quiet and durable operation. Designed for low noise and continuous use without discomfort. - Simple, adaptable controls. Three-speed airflow lets you choose the cooling intensity you need. Memory function remembers the last setting and restores it when the device is turned on again. Features and performance: - Function: Neck-worn cooling device with directed back-of-neck airflow for fast localized cooling. - Cooling technology: NTC temperature control with cold aluminum semiconductor element for efficient heat extraction. - Cooling reach: Large cooling surface area and turbo cold-air delivery can lower felt temperature to about 15 C within seconds under normal conditions. - Battery: 5200 mAh dual-core lithium battery for extended use and improved energy density. - Controls: Three fan speeds, adjustable airflow, and memory mode that restores the previous setting after power cycling. - Build: Lightweight, ergonomically shaped for comfortable all-day wear, and engineered for quiet operation. Practical use scenarios: - Commuting and travel: Wear during hot city commutes, rail or bus travel, and airports to stay comfortable without bulky equipment. - Outdoor activities: Use while walking, hiking, or watching outdoor events to maintain a steady cooling effect on the neck even when ambient temperatures are high. - Work and home: Ideal for office desks, kitchens, or household chores where localized cooling keeps you comfortable without cooling an entire room. This wearable neck cooler combines semiconductor cooling technology, a high-capacity dual-core battery, and user-friendly controls to deliver effective, portable cooling whenever and wherever you need it.