Features: OOTDTY brand new and excessive quality. External material: ABS plastic, durable. Rated current: 2mA, Working for DC 30V, Frequency: 4000+/-500Hz. It is extensively used in car modification, DIY digital reminder task or other fields that require sound alarm. Equipped with black and pink 2 wires, handy for wiring. Specifications: Material: Plastic Weight: Size: As picture shows Color: Black Package Includes: 1x Electronic Buzzer Note: 1 allow 1-2cm mistakes due to instruction manual measurement, simply make sure you do not mind before you order. 2 to the adaptation between varied monitors, the picture might not reflect the particular coloration of the item.