Heart rate sensorsT31 coded™ transmitter WearLink®+ transmitter Polar WearLink®+ transmitter with Bluetooth® T31 transmitter WearLink®+ transmitter W.I.N.D. Polar WearLink®+ transmitter Nike+ WearLink®+ Hybrid transmitter Cycling sensorsCS speed sensor™ CS speed sensor W.I.N.D. and Twist Lock Bike Mount CS cadence sensor™ W.I.N.D. CS cadence sensor™ CS speed sensor W.I.N.D. and Dual Lock Bike Mount set Kéo Power Running sensorss3+ stride sensor S1 foot pod™ GPS sensorsG5 GPS sensor G3 GPS sensor W.I.N.D. G1 GPS sensor Data transferIrDA USB Adapter WindLink™ FlowLink® DataLink Other accessoriesTwist Lock Bike Mount Magnet set Speed Sensor CS Elastic Straps Battery set for FT7 and FT4 Battery Set for s3 stride sensor™ W.I.N.D. Battery Set for RCX5, RS800 and RS400 Universal Bike Mount Magnet set Cadence Sensor CS CS Pouch Battery set for RCX3, FT80, FT60, FT40 and FA20 WearLink® Connector Battery Set G5 GPS armband Battery Set for CS600, CS500 and CS400 GPS Strap Pouch GPS Clip H7 heart rate sensor Soft strap Share WearLink® Connector Battery Set It couldn’t be easier to change the battery in your Polar product. This set includes a CR2025 battery and a battery cover with sealing ring for easy and quick replacement. WearLink® Connector Battery Set£5.45 / €6.66 View all compatible products Compatible Products CS200cadImproved Cycling PerformanceCS300Cycling and Cross-TrainingCS500+Functional Design for the RideCS600XMaximise Road Cycling PerformanceFT4Fitness ImprovementFT40Clear Training GuidanceFT60Weekly Training ProgrammeFT7Clear Training GuidanceFT80Strength Training GuidanceRCX3Instant Training FeedbackRCX5Optimised TrainingRCX5 Tour de FranceOptimised Training in a Limited EditionRS100Basic Heart Rate and TimingRS300XSpeed, Distance, and Heart RateRS800CXMaximum Performance for Endurance SportsPolar WearLink®+ transmitter Nike+Polar WearLink®+ transmitter with Bluetooth®WearLink®+ Hybrid transmitterWearLink®+ transmitterWearLink®+ transmitter W.I.N.D.