brand new and high quality Feature: Made of soft nylon material, adjustable size, easy to use, durable, highly efficient and stable, hand washable. Soft material and adaptive electrodes make it extremely sensitive to pick up your heart rate electrical signals. It is an indispensable part of heart rate monitor. It will detect and send your real-time heart rate to the receiving terminal accurately. Comfortable and adjustable elastic strap. Utilizes the snap attachment method. Easy and simple to use. With the chest strap based on high quality material, it can be attached to your skin closely. for all heart rate sensors (ANT+, Bluetooth-compatible 4.0, 5.3K). Suitable for /for Alatech/for Echowell, for Polar/for GPS sport watch, for Wahoo/for Runtastic/for Micoach/for Strava phone APP and other devices. Chest Belt Strap only, other accessories demo in the picture is not included Specifications: Item Type: Chest Belt Strap Material: Nylon Size: 3x98cm/1.18x38.5in Color: for Grey, Black(Optional) Two snaps Distance: Approx. 45mm (please check the distance of your transmitter and confirm the compatibility) Quantity: 1 Pc How to wear a chest strap: 1.Before wearing, check whether the length of the chest strap is suitable for you. If it is not suitable, you can adjust the length by elastic band. 2.When wearing, place the transmitter in front of the chest, as shown in the figure, and then pass the other section around the body and pass the buckle through the other end of the transmitter. Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1 x Chest Belt Strap Have a great time shopping!