Harness the power of your iPhone from the comfort of your handlebars with the Wahoo RFLKT Cadence Bundle Pack. The RFLKT is much more than a bike computer, it uses Bluetooth 4.0 technology, connecting your iPhone and mirroring your workout data from your favorite fitness app. The world"s first iPhone powered bike computer displays GPS, heart rate, and other sensor data all from your iPhone...and it controls music playback, too. And the RPM Cadence Sensor is sleek, wireless, lightweight, and snap to install....using Bluetooth 4.0 connectivity to stream cadence data wirelessly to your iPhone. Get more out of your ride with the Wahoo RFLKT Cadence Bundle Pack.Features & Benefits:Weather and shock proof IPX7 certified for riding in all types of weather and on all types of terrainiPhone powered wirelessly receives data and images from an iPhoneLow power, long- lasting, replaceable coin cell battery...no need for extra cables or rechargingBluetooth 4.0 (Smart) Wireless ConnectivitySmall and sleek weighs only 2ozMeasures 2.4? long x 1.6? wide x .05? thick With 3 different mounting options, it fits all bike typesFeatured apps: Strava, Training Peaks, MapMyRide, Garmin Connect, Runkeeper, Ride with GPS, and several othersCompatible devices: iPhone 5, iPhone 5C, iPhone 5S, iPhone 4S, iPad (3rd gen), iPad (4th gen), iPad Mini, iPad Air, iPod Touch (5th gen)RPM Cadence Sensor:Sleek, sexy, and light at only 7gMount with double sided 3M tape. Or use the silicone sleeve with zip tiesNo charging required, operates on a coin cell battery for up to 2 years without ever taking it off your bikeLED light flashes to let you know that you"re connected and ready to ride!RPM will work with any bike.Shipping Dim Weight: 1.0 lbs.