ASICS Gel Resolution X Tennis Shoes Night Energy (Black Prism Blue) kickr QZSS GNSS Chipset All Satellite Dual Frequency Size:Mens 8.5 Womens 10.5 QZSS GNSS Chipset All Satellite Dual Frequency Navigation Map Layer Breadcrumb — Additional Features Checkpoint Back To Start Deviation Alert Touchscreen Enabled Map Control Data Tracking Sensors Optical Heart Rate Monitor May not work over tattoos Barometric Altimeter Accelerometer Gyroscope 3D Compass Thermometer Supports body temperature in training (with compatible accessory) Optical Pulse Oximeter — Training Features Resting Heart Rate Underwater Heart Rate Action Camera Control Supports select GoPro and Insta360 cameras Virtual Run Altitude Mode Regular evaluation of SpO2 and fitness when at high altitudes Touch Scroll Swipe to scroll data pages during training Daily Features Updateable Firmware With Wi Fi and the COROS app Find My Phone Find My Watch Backlight Always On Mode — Music Plays offline music when paired with supported Bluetooth headsets 3rd Party Integration Compatible Apps Nike Run Club • REMOVABLE WINTERIZED GASKET: The fleece lined gasket is moisture wickingand can be added or removed based on your preferences Model: Gel Resolution X Night Energy On clay courts