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

Specifications: 1. Model: SD-548B2. 2 tier LCD display3. Material: Plastic electronic components4. ShowLCD display5. Color: Black6. Uses one 1.5V AG13 battery (included) Package Contents:1 X LCD Bike Bicycle Computer Odometer1 X User Manual1 X Mounting Shoe (Senser)1 X Wheel Magnet1 X Computer Battery (1.5V/AG13)6 X Cable TiesIntroduction:This is a great tool for its price. This Bike Computer Odometer Speedometer has many useful functions.It is functioned as tracking your training progress in real time. Easy operation and durability make it popular with people. Generally speaking， with it， you can control your riding every moment.Functions:1. SPD: CURRENT SPEED2. ODO: ODOMETER3. DST: TRIP DISTANCE4. MAX: MAXIMUN SPEED5. AVS: AVAAGE SPEED6. TM: ELASPED TIME7. CLK: CLOCK / (12H/24H)8. SCAN9. \"+\" \"-\"COMPARATOR10. SEETING: SPEED SCALE (KM/M)11. SEETING: TYRE CIRCUMFERENCE (0mm-9999mm)12.SEETING: THE LAST VALUE OF ODOMETER13. FREEZE: FRAME MEMORY14. AUTO: ON/OFFNotes:1. Chronograph with waterproof function can be used in the rain， but not Qinru water use;2. Code table on the back battery cover is open， being careful not to waterproof gasket lost;3. Probe and the magnet should be a 2mm sensing range， within the handlebar diameter 2.5CM4.The position of the Magnetic Head corresponding to the position of the \"sensor \