Thank you for viewing. This is a cadence sensor for FITBOX. I purchased it here, but I'm selling it because I haven't used it. I have confirmed that it works. The contents are as shown in the third photo. The rubber bands are missing. The main unit only. This is a used item, so please understand. ※ Please purchase after agreeing to the following points: ・ You can purchase without commenting. ・ First come, first served. Even if we are in the middle of a comment exchange, the person who purchases first will be given priority. ・ We inspect the item, but there may be oversights such as small scratches or stains. Please refrain from purchasing if you are nervous or looking for a perfect item. ・ Shipping will be done using the cheapest method. We are not responsible for any problems after shipping.