Heart Rate Monitor Chest Strap Replacement Band For Myzone COMPATIBLE WITH THE HEART RATE SENSORS: Chest strap works with the MZ-3. ADJUSTABLE SIZING: Belt circumference 66cm (adjustable), width 3cm. EASY USE AND CLEAN: Utilizing the same snap attachment method. The sensor transmitter must be removed and the soft strap hand-washed as often as needed. COMFORTABLE AND GREAT WORK: With the chest strap based on Nylon material, it can be attached to your skin closely. Soft fabrics and adaptive electrodes make it extremely sensitive to your heart's electrical signals. NOTE: Only Strap, Heart rate sensor Transmitter NOT included. Colour: Red Material: Nylon Package Contents: 1 * Strap Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.