Panasonic RQSX40 is an advanced device that offers a wide range of capabilities to help you improve your health and fitness. With its built-in heart rate monitor, you can track your heart rate in real time, ensuring that you stay within your target zone during workouts. The device also features a calorie counter, so you can track your calorie burn and make sure you're burning enough calories to reach your fitness goals. Additionally, the Panasonic RQSX40 is water-resistant, so you can wear it while swimming or showering without worrying about damage. The device also has a long battery life, so you can wear it all day without having to worry about recharging it. With its sleek design and comfortable fit, the Panasonic RQSX40 is the perfect device for anyone who wants to improve their health and fitness.