OmniSound HD, 100–24000 Hz, 90 dB, mini USB 2.0, SD/SDHC, 640 g, Black
Konftel 55W, 90 dB, 1 x 3.5 mm, 100 - 240 V, 12 V, 222 x 206 x 68 mm, 640 g
Konftel 55W. Signal-to-Noise Ratio (SNR): 90 dB. Audio connections: 1 x 3.5 mm. Input voltage: 100 - 240 V, Operating voltage: 12 V. Dimensions (WxDxH): 222 x 206 x 68 mm, Weight: 640 g. Compatible memory cards: SD, SDHC