The Wahoo TICKR Fit Optical Heart Rate Armband is equipped with Bluetooth and ANT+ technology to seamlessly pair with fitness apps, smartphones, and GPS bike computers or watches. Worn on the forearm, the Wahoo TICKR FIT heart rate monitor comes with an adjustable band that is designed for your most grueling workouts including running, cycling, fitness classes, and more. Wahoo TICKR FIT has water-resistant technology and a rechargeable battery that lasts up to 30 hours.Wahoo TICKR Fit Optical Heart Rate Armband FeaturesDUAL-BAND ANT+ AND BLUETOOTH TECHNOLOGY - Both Bluetooth and ANT+ capabilities allow for a wireless connection to both smartphones and GPS bike computers and watches. Note: Does not serve as an ANT+ bridge.REAL-TIME HEART RATE, CALORIE, AND WORKOUT DURATION TRACKING - TICKR FIT measures vital workout metrics, including heart rate, calorie burn, and workout duration in real-time with the Wahoo Fitness app. These metrics can also be sent to compatible third-party apps that track these metrics.LED INDICATOR LIGHT - One LED light shows visual confirmation of the TICKR connection status via Bluetooth and / or ANT+: searching for a connection, connecting, and reading heart rate.USB RECHARGEABLE BATTERY - Includes a USB rechargeable battery with up to 30 hours of battery life.ADVANCED PERFORMANCE MATERIAL STRAP - Made from advanced performance materials, the TICKR FIT strap is designed to fit comfortably, yet stay securely in place during intense activity.TWO ADJUSTABLE BANDS INCLUDED - TICKR FIT comes with 2 adjustable bands (small and large size) in the box.APPLE WATCH AND APPLE TV INTEGRATION - Connect directly via Bluetooth to your Apple Watch or Apple TV as another option for gathering heart rate data while you workout.THIRD PARTY APP COMPATIBILITY - Works seamlessly with over 50 apps - including Zwift, The Sufferfest, Peloton for cycling and Runkeeper and MapMyRun for running.ULTIMATE PRECISION - TICKR FIT uses the latest in optical heart rate technology to give you accurate heart rate and calorie burn data for up to 30 hours.COMFORTABLE AND SECURE - Made from advanced performance materials, TICKR FIT’s band is designed to fit comfortably around your arm, yet fit securely during intense activity.Wahoo TICKR Fit Optical Heart Rate Armband SpecificationsPart Number: WFBTHR03Rechargeable Battery: 30+ hoursStrap Length: Small 10 x 1\" (260mm x 25.4mm) and Large 15\" x 1\" (375mm x 25.4mm)Water Resistant: IPX7 (waterproof up to 5 feet)Sweat proof: Yes (hand washable strap)On/Off ButtonNot compatible with chest strapsIn The Box: TICKR FIT unit, Small arm strap, Large arm strap, Battery charger.\"