Specifications: - Overall Dimension(LxWxH): 5 1/8"" x 5 1/8"" x 3 1/8"" (13 x 13 x 8 cm) - Applicable Mirror Ball Size(dia.): Smaller than 11 13/16"" (30 cm) - Length of Hanging Chain: 7 1/2"" (19 cm) - Voltage: 4.5 V - Power: 120 V - Motor Speed: 6 rpm - Battery Type: 3 pcs Aa Batteries - Load Capacity: 4.4 Lbs (2 kg) - Max. Continuous Working Period: 4 hrs - Net Weight: 0.4 Lb (0.2 kg) . Package Contents: - 1x Motor - 1x Hanging Chain . Notice: - Please note that it is better to take out the used battery to prevent leakage of electricity from affecting the function of the motor.