Originally Posted by PaulRivers

Everything is included, but sometimes the battery is comes with is bad and you have to buy a new one. My dad's had this happen.

Fyi I guess, I've had real bad luck with wireless speedometers and only go with wired ones. This last year I bought my dad a wireless speedometer, a $100 unit from Bontrager, and guess what? It's innacurate, on the first ride out it claimed he biked 94 miles. I assure you...I was biking with him, and we did not bike remotely anywhere near 94 miles lol. Turns out others have this issue as well.

Plus you have to replace 2 batteries every year or two.

Biggest problem with a decent wired speedometer is that after having it for over a decade, something finally jammed up in mine. Not sure if I can just reset it or have to replace it. Have never replaced the battery. This is the first issue it's ever had.

Good luck.