Bontrager DuoTrap Digital Speed/Cadence Sensor Bottle Cages The PowerTruss sole design improves

The PowerTruss sole design improves stiffness without adding significant weight

crank cadence band and CR2032 battery

Silicone gel pads are specifically designed for comfort and vibration control

9 and 10-speed compatible

And even place for a rear light on the back to make sure you and your saddlebag are seen in the dark

Bontrager DuoTrap Digital Speed/Cadence Sensor Bottle Cages The PowerTruss sole design improvesSpot on. Every time. Bontrager DuoTrap is the integrated sensor that wirelessly transmits ANT+ and Bluetooth Smart signals to your computer or phone. The easy to use sensor installs in seconds and fits directly into the chainstay of select Trek bicycles for a clean look and preserved aerodynamics. Product details ANT+ 2. 4 GHz and Bluetooth Smart wireless digital speed and cadence sensor ANT+ and Bluetooth Smart allow simultaneous use of Trip 300 and