Product details:

The sleekly designed Quick bike computer with integrated Out-Front Bracket measures your speed and distance giving you the edge on your daily commute and beyond. Features include programmable odometer auto start/stop battery indicator clock and easy-to-read LCD screen. The computer mount fits handlebars or stems 25.4mm to 31.6mm. The computer takes 1 CR1616 battery and the SPD sensor takes 1 CR2032 battery. The unit itself measures 93.5 x 54 x 36mm and weighs just 24g.Sleek design with integrated out-front bracket (head unit is removable from the bracket)
Easy to read inverted LCD
Auto start/stop