https://www.cateye.com/files/manual_dl/5/118/ed300.pdf Dimensions (mm): 38 x 54 x 17.5 Weight (g): 28 Power: Lithium battery CR2032 x 1 Measured Items: Speed / 0.0 (4.0) - 300.0 km/h [Top Display] / 0.0 - 300.0 km/h [Bottom Display] Setting Range (Tire Circumference Set Range): 10mm - 2999mm (Initial Value: 2096mm) Battery Life: Approximately 3 years Clock Function: 1:00 - 12:59 or 0:00 - 23:59 (*Displays current time in 12-hour clock when measurement unit is "M (mile)", and 24-hour clock when "K (km)") The box is not included, only the item in the photos. *Please refer to the images as this is subjective. Please consider purchasing after understanding that this is a used item. #Speed #Bicycle #Cycle Computer