4-piece set includes: BSC100 cycle computer x 1, bike mount x 1, Japanese instruction manual x 1, CAD 70 main unit x 1, fixing band x 3, battery x 1, Japanese instruction manual x 1, SPD 70 main unit x 1, dedicated mount x 1, Japanese instruction manual x 1, M80 bike mount x 1, mounting 0.1 inch (2.5 mm) hex wrench x 1 mm)