Likely great for a road bike, but won't work for a mountain bike. there is no way to mount the receiver so it is close enough to the spokes and the wireless won't reach to the back tire. Thanks Huck for returning so easily!
I really like crankbrothers having ridden spds for years. less accidental unclipping and once you get used to it easy entry/exit
has a ton of float - side to side - so different from unclipping an spd because if you just turn your foot you stay clipped in. I like this balance of weight/price. i have the lower end one on my road bike and don't notice a performance difference though the weight is certainly different