Garmin Edge 810 GPS Bike Computer

Works with most standard bicycle hub dynamos
Safety circuitry in power converter protects battery against power spikes
Designed to work with the ReeCharge Case Bracket and ReeCharge Case (both sold separately)

4 lighting sources: 1/2-Watt white LED, IR LED, red LED and blue LED
Double click of button initiates high intensity strobe of selected light source
Push-button switch enables-disables selected lighting source starting at low intensity and progressing to the brightest intensity

Rechargeable Ni-Cad battery pack for Steamlight SL-20X Rechargeable flashlight system
Up to 1000 hours of battery life
Fits older SL-20

Easy-to-install – Simply attach the sensors and ride. With no magnets or other exposed parts to line up, these sensors are easy to install, maintain and move between bikes.
Speed sensor – Attaches to the hub of either wheel and self-calibrates with your Garmin Edge to give you accurate speed and distance at all times, including indoors on the turbo trainer.
Cadence sensor – Fastens to any crank arm size and measures pedal strokes per minute so you can get the most out of your training.