Polar W.I.N.D. - CADENCE SENSOR - for RS800cx, CS600x, CS500+, R

For Sale: Brand new, old stock, in factory sealed blister packaging.

Packaging says "for Polar RS800CX, CS600X, CS500+, RCX5, and RCX3"

Additional higher resolution photos are available on request. 

Send your zip code and city for a shipping estimate- should be between $4.99 and $6.99 if you are in the US. (Feb. 2023).