uxcell 10pcs 5V Active Buzzer Magnetic Long Continous Beep Tone Alarm Ringer Product Name : Active Magnetic Buzzer;Voltage : DC 5V Min Sound Output at 10cm : 85dB;Total Size(Pin Not Included) : 12 x 9mm/0.47" x 0.35"(D*H) Materials : Plastic, Metal;Main Color : Balck Net Weight : 8g Package Content : 10 x Active Magnetic Buzzer