Specifications: 1) Diameter: 4mm 2) Overall length: 12.7+/-0.3mm 3) Rated voltage: 3.0V DC 4) Rated current: 75mA max. 5) Rated speed: 10,500 +/- 2,500rpm 6) Starting voltage: 1.7V DC Max 7) Stall current: 95mA max. 8) Operating voltage: 2.2-3.6V DC 9) Applications: mobiles, pagers, PDAs,other vibration products Inner packing: Foam Outer packing: Strong carton