Improve Lung Health: Smart Breathing Trainer is a portable lung capacity exerciser designed to strengthen respiratory muscles. It helps improve lung capacity and overall lung function, making it suitable for athletes, singers, divers, and individuals looking to enhance breathing performance. Personalized Training: Featuring adjustable resistance levels, this breathing trainer allows users to customize workouts based on individual fitness levels and goals. The ability to gradually increase resistance supports improved endurance and stamina over time, making it appropriate for both beginners and advanced users. Strengthen Respiratory Muscles: Regular use helps strengthen key breathing muscles, including the diaphragm and intercostal muscles. This can lead to enhanced respiratory efficiency, better breath control, and increased lung endurance. Compact and Lightweight: The device is compact and lightweight, allowing for easy portability and convenient use at home, in the office, or while traveling. Users can easily integrate breathing exercises into their daily routine. Easy to Use and Monitor: Designed with a user-friendly interface and intuitive controls, the trainer is simple to operate. A built-in monitor displays breathing performance, enabling users to track progress and observe improvements over time. Item Type: Breathing Trainer Material: Plastic Battery Type: Lithium-ion Battery 320mAh (Built-in) Product Size: Approx. 140 x 22 x 12mm / 5.5 x 0.9 x 0.5in Package Includes: 1 x Breathing Trainer, 1 x User Manual, 2 x Mouthpiece, 1 x USB Cable