This speedometer is really cheap, that's why I bought it. It seems quite accurate if you calibrate it well. It is working on my folding bike (20" wheels), and that was a good surprise.Overall it's a good one. Just be really careful with the wire, tape it on the head tube and the fork, maybe...

This speedometer is really cheap, that's why I bought it. It seems quite accurate if you calibrate it well. It is working on my folding bike (20" wheels), and that was a good surprise.Overall it's a good one. Just be really careful with the wire, tape it on the head tube and the fork, maybe...

This speedometer is really cheap, that's why I bought it. It seems quite accurate if you calibrate it well. It is working on my folding bike (20" wheels), and that was a good surprise.Overall it's a good one. Just be really careful with the wire, tape it on the head tube and the fork, maybe...

Excellent Wireless Bike Computer, durable in any situation, even for people like me who practice mountain bike, I highly recommend it, good value for money unbeatable. THANKS BANGGOOD!!!

Excellent Wireless Bike Computer, durable in any situation, even for people like me who practice mountain bike, I highly recommend it, good value for money unbeatable. THANKS BANGGOOD!!!

Excellent Wireless Bike Computer, durable in any situation, even for people like me who practice mountain bike, I highly recommend it, good value for money unbeatable. THANKS BANGGOOD!!!