Features: Accurately monitoring heart rate, real-time data transmission, helping users optimize healths management. Compatible with multiple devices, light weight and portables, durability materials. Easy to use, support long-terms use. Fitness enthusiasts, athletes, those in need of healths monitoring, and patients with cardiovascular diseases. Gym exercise, outdoor running, daily healths monitoring, professional sports training. Specifications: Dimension:22.8×15.6cm/8.98×6.14in Component:plastomer Package Includes: 1pc Exercise Bike Speedometer note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.