I bought this, tried it once and found it was incompatible with my exercise machine. You can find product details at: https://www.amazon.co.uk/gp/product/B07N3C5WRG
My schedule is unpredictable but reasonably flexible at the moment, so let me know what days/times suit you for collection and we can work it out.
Garmin heart-rate monitor for fitness training (Caversham RG4)
This offer has been gifted to someone and is no longer available.