ITEM NAME:5 pcs Continuous Electronic Buzzer 2 Pins DC 3/ 5V - 9 x 4.2 mm - Black C6D4 5 pcs Continuous Electronic Buzzer 2 Pins DC 3/ 5V - 9 x 4.2 mm - Black C6D4 Product name: electromagnetic buzzer Sound type: Sound continued Rated voltage: DC 3V/ 5V Resistance: 16 Ohm Body height: 9 x 4.2 mm/ 0.35" x 0.17" (D x D) Pin 4 mm cast Outer material: plastic Color: Black Weight: 4g Package Content: 5 x Electromagnetic Ring Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.