Fangrui Product Details The For Computer Speedometer Ant+ Speed And Dual Sensor Is A High-quality Accessory For Cyclists. It Provides Accurate Speed And Data, Compatible With For , For , And For Devices. The Sensor Is , Ensuring It T Add Unnecessary Bulk To Your Bike. Stay On Top Of Your Cycling Performance With This Reliable Ant+ Sensor. , High-quality. Product Name:dual Mode Sensor For Pedaling Frequency And Speed Model:s3+speed/tap Frequency Sensor Wireless Interface:bluetooth Smart, Ant+ Battery Life:400h Waterproof Performance:ip66 Operating Temperature:-1050battery Type:cr2032 Battery (customers Need To Purchase It Themselves, The Product Does Not Come With A Battery) Colour:black Material:plastic Package Contents: 1 * Sensor 1 * Crank Rubber Ring 1 * Crank Silicone Gasket 1 * Flower Drum Rubber Ring Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement All