ACCURATE HEART RATE MONITORING: Stay on top of your workout intensity with precision. Integrated optical sensors and accelerometer provide hyper-accurate real-time heart rate tracking through the LED display. Ideal for fitness enthusiasts and athletes.,LONG-LASTING BATTERY: Our heart rate monitor is equipped with a high-capacity rechargeable lithium-ion battery. Enjoy up to 24 hours of tracking on a single charge, ensuring you stay on top of your heart rate and fitness goals.,EXTREME DURABILITY: Rhythm+2.0 is tough and waterproof with an IP68 rating, perfect for intense workouts. Swim, run, or train outdoors without compromising its performance. Ideal for fitness enthusiasts and outdoor enthusiasts.,WIDE DEVICE COMPATIBILITY: Pairs with both ANT+ and Bluetooth devices, providing seamless connectivity to most 3rd party fitness apps, gym equipment and more. Our armband acts as a continuous heart rate monitor, for tracking heart rates in any environment. Please Note: May not work with branded apps, please get in touch with our service team for assistance.,DURABLE & VERSATILE: R+2.0 features an adjustable armband designed to provide a custom fit for upper arms, biceps, or triceps (6.7 to 15.75 inches). It ensures your heart rate monitor stays securely in place during intense workouts.