Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

SB-318 Bike Bicycle Computer Odometer Speedometer 15 Functions Digital LCD Waterproof for Outdoor Cycling - Black + RedFeatures:.The mini bicycle computer has 15 functions， which can satisfy greatly your needs.Material: Engineering plastics， electronic components.Water resistant design for outdoor riding (can be used while raining).Powered by AG13 button cell battery(Included)Main Functions:1. SPD current speed2. ODO odometer3. DST trip distance4. MXS maximum speed5. AVS average speed6. TM elapsed time7. CLK clock (12H/24H)8. Scan9. + - comparator10. Setting speed scale (km/h， m/h)11. Setting type circumference12. Freeze frame memory13. Setting the last value of the odometer14 MAINTENANCE ALERT15. Auto On/OffSpecifications:.Model:SB-318.Color:Black + Red.Material: Engineering Plastics + Electronic Components.Powered By:AG13 Button Cell(Built-in).Waterproof:Yes(Life waterproof).Packing:Blister Card Package Content:.1 x Odometer.1 x Sensor.1 x Induced Magnet.6 x Tied Cable.1 x User Manual