2 clock mechanisms with black battery operated hands. RoHS certified. Can be used with all flat surfaces up to 10mm thick. The mechanism works with AA batteries, not included. Build your own clock and bring whatever decoration you want. With the mechanism, three hands are included: small hand: 8 cm, The hands included, measure: hour hand: 8 cm, minute hand: 11 cm, second hand: 12 cm. Mechanism that can be mounted on a board of maximum 10 mm. 3 needles: 8/11/12 cm. Case size: 5.5 x 5.5 x 1.5 cm. Plastic material. Runs on 1.5 V battery. Battery not included