This is a Giant cycle computer. It's GPS-compatible, so you can use it without any sensors; just attach it and go. The third photo shows how it looks when mounted; the light is not included. The mount in the photos is included. Used for less than 1000km. From the official website: ● 2.0-inch anti-glare LCD display, easy to see outdoors ● Customizable display of up to 5 items, 5 pages ● Long battery life: Up to 16 hours of operation ● Quick start: High-sensitivity GPS receiver quickly captures location information ● Easy setup: Easy one-handed operation with three physical buttons and an intuitive UI. You can also set display items with the NeosTrack APP. ● Auto-sync: Ride data automatically uploads to STRAVA and TrainingPeaks via the NeosTrack APP. ● POP-up notifications (email, phone, text) ● IPX7 waterproof performance ● Supported wireless method: Bluetooth SMART 4.0 (for connection with smartphones and various sensors) ※ANT+ compatible sensors are not supported. ● Auto display adjust: Automatically adjusts display items when sensors are connected ● Smart backlight ● RIDESENSE compatible (sold separately) ● Dual bike compatible