The for MAGENE Computer Speedometer ANT+ Speed and Cadence Dual Sensor is a high-quality accessory for cyclists. It provides accurate speed and cadence data, compatible with for GARMIN, for IGPSPORT, and for Bryton devices. The sensor is lightweight, ensuring it won't add unnecessary bulk to your bike. Stay on top of your cycling performance with this reliable ANT+ sensor. 100% brand new, 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:-10℃-50℃ Battery 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 allowed error is +/- 1-3cm.