This is an arm band heart rate sensor. It connects to a cycle computer and has been used a few times. - Product Name: COOSPO HW706 - Appearance is close to unused condition. - ANT+ connection to Bryton cycle computer, operation confirmed. - Accessories: 1 charging cable, 4 bands (2 genuine, and 2 shorter aftermarket bands prepared for smaller arms), instruction manual Please check the photos. Please consider this item understanding that it is a used product. Shipping method is planned to be Yu-packet Post Mini.