Micro Traders 4pcs Battery Cover Replacement Heart Rate Monitor Battery Cover 25mm Compatible with Wahoo TICKR HRM Part Repair Black Plastic

["The heart rate monitor replacement battery cover. This is a different design to the original. This has more material on the lugs for a more robust design. Give it a good push down, then turn when putting it on.","Compatibility: Compatible with Wahoo TICKR HRM.","Material: Battery cover made of plastic, much more durable and strong.","Size: Diameter 25mm.","Package: 4pcs battery cover. (Only included battery cover)"]