InLine 89900A, 44100 - 48000 Hz, 6 V, 2.83" (72 mm), 1.89" (48 mm), 0.906" (23 mm), 1.16 oz (33 g) InLine 89900A. Frequency range: 44100 - 48000 Hz. DC input voltage: 6 V. Width: 2.83" (72 mm), Depth: 1.89" (48 mm), Height: 0.906" (23 mm)