Great value 3-piece set! Includes the main unit, mount, silicone cover, and LCD protection seal. If you don't need navigation or training features, this is the cycling computer I think offers the best value for money. I myself use one on my road bike. ・Connects to your smartphone for screen customization and log management ・Compatible with optional speed sensors, cadence sensors, heart rate monitors, and power meters ・Latest GPS support ・Garmin-compatible mount ・USB Type-C charging and 40-hour battery life ・2.6-inch screen, just the right size ・Slim and stylish design ・Japanese instruction manual included ・Mount set Mount includes a headlight holder! ・Silicone cover and protective seal set 《Main Unit Specifications》 Brand: iGPSPORT Model: BSC100S Connectivity: Bluetooth 5.0, ANT+ Battery: Up to approximately 40 hours Charging Interface: Type-C Screen Size: 2.6 inches 《Set Contents》 Main unit (BSC100S), mount, protective case, protective film, strap ※Protective case/film and strap are included as service items. Condition: New, unused (unopened) While the product is protected during packaging, there may be slight box damage during shipping.