カーナビ カーオーディオ クラリオン | Clarion Japan | SRT1733。Amazon.co.jp: Clarion SRT1733 6.7-inch Multi-Axial 3-Way Speaker。Clarionクラリオン | SRT1733。Features a 16cm diameter multi-axial 3-way structure for balanced sound reproduction from clear highs to mid-lows, designed for automotive use.