I have a Rans Stratus & Rans V2, I use a Cateye Astrale 8. I know its wired but I run it off the front 20" wheel with wire to spare on the standard unit. I mostly use it for overall mileage and the cadence feature. I use my GarminEdge 305 as an odometer. Cateye does offer the Micro Wireless and a V2C check the website http://www.cateye.com/en/product_detail/461. Hope this helps. The best source for recumbent info is to check out the bentrider online message board ( AKA forum) http://www.bentrideronline.com/