S9Q 4in1 Waterproof LCD Digital Bicycle Bike Computer Odometer Speedometer Stopwatch Display: Two-line four window displays. Size:production size 9 x 4.8 x 2.2CM, LCD Size 7 x 1.7CM Power by : 1x 3V CR203 Lithium batteries ( Battery included ) 100% Brand New and High quality. S9Q 4in1 Waterproof LCD Digital Bicycle Bike Computer Odometer Speedometer Stopwatch