The bike sensor provides speed and cadence data when riding a bike trainer and connects to compatible cycling apps via Bluetooth. Choose between speed or cadence mode. Features: - Utilizes Bluetooth BLE 4.0 and ANT+ dual-mode technology, compatible with bike computers supporting standard Bluetooth and ANT+ protocols. - Wireless connection to cycling apps enables seamless data transfer. Compatible with Wahoo, Cateye, Topeak, Teasi, Komoot, Falk, Meilan, Shealth, and other supported apps. - Advanced software algorithm automatically measures speed and cadence; suitable for outdoor cycling and indoor spinning. - Equipped with a quick-select button to switch between speed and cadence modes. Indicator lights display operating status: white for cadence, green for speed. - Powered by a CR2032 coin cell battery for easy replacement, providing up to 9 months of continuous use. - IPX5 waterproof rating ensures reliable performance in heavy rain. - Simple installation process completed in seconds. Specifications: - Brand: Meilan - Model: C1 - Material: ABS - Color: Black - Waterproof Rating: IPX5 - Bluetooth Version: 4.0 - Package Weight: 15g / 0.53 oz - Package Dimensions: 80 x 70 x 20mm / 3.15 x 2.76 x 0.79 in Notes: - Meilan C1, C3, and M4 are designed for use with bike trainers and may not be compatible with all spin bikes. Verify fit before installation. - The device supports single-channel output; only speed or cadence mode can be active at a time. Package Includes: - 1 x Speed Sensor - 2 x Rubber Bands